Books Big Mistakes Hard Lessons Can Be Necessary

Big Mistakes · ch 10 of 16

Hard Lessons Can Be Necessary

Even a disciplined pro caved to FOMO and piled into tech at the 2000 top, giving back billions in weeks.

The rule for your portfolio

Don't chase a mania you already know is a bubble; FOMO at the top is how pros surrender years of gains.

Even the calm player can lose their head

Imagine the most careful boy in your class. Let's call him Arjun. When everyone rushes for the last samosa at the school fete, Arjun waits. When the whole class is convinced the answer to a maths problem is "42," and he has quietly worked out it's "38," Arjun raises his hand and says "38." He is not shy - he just trusts his own careful thinking more than the noise around him. If there were a prize for keeping a cool head, Arjun would win it every year.

Now here is the strange, uncomfortable question this chapter is built on: what if even Arjun - calm, careful, usually right - cracked one day? Not because he suddenly became foolish, but because the pressure got so loud, and everyone around him seemed to be winning so much, that he threw away his own careful thinking just to join in. What if the coolest head in the class, on one bad afternoon, did the exact thing he always warned others against?

That is the real lesson here, and it is a hard one to swallow. We like to believe that being smart and disciplined makes us safe - that if we just learn enough and stay calm enough, we will never do something silly with our money. But this chapter takes a famous, genuinely brilliant investor - a person whose whole career was built on cool judgement - and shows him, at one particular moment, abandoning everything he knew and jumping onto a runaway train he himself had called dangerous. He did it not out of ignorance but out of a very human feeling: the pain of watching other people get rich while he sat still.

The point is not "smart people are secretly dumb." The point is gentler and scarier than that. If it can happen to one of the sharpest minds in the business, it can certainly happen to you and me. So the job of this chapter is to understand exactly how a careful person gets pulled off course, so that when the same pull comes for us - and it will - we recognise it and hold on.

What a mania actually feels like from the inside

Before we can understand why a careful person caves, we have to understand the weather they were standing in. Because it is easy, years later, to look back and say "obviously that was a bubble, why did anyone buy?" But in the moment, a mania does not feel like a warning sign. It feels like a party everyone else got invited to.

Let me build the feeling slowly. Picture a whole country deciding, more or less at once, that some new kind of business is going to change everything and make everyone rich. Newspapers write about it every day. On the bus, two strangers are talking about it. Your uncle, who has never bought a share in his life, mentions at dinner that he "put a little in." The prices of these new companies do not just rise - they leap, week after week, and the ones who bought early are not just a bit richer, they have doubled or tripled their money in months. Ordinary people, people you know are not cleverer than you, are suddenly buying bigger flats and talking about quitting their jobs.

Now here is the cruel part. You, being careful, looked at these companies and saw that many of them earned no profit at all. Some had barely any real business - just a thrilling story about the future. So you sensibly stayed out. And for a while that felt wise. But the prices did not stop. They kept climbing, and climbing, and the longer they climbed the more foolish your caution began to look. Every single day the market opened and rubbed your face in it: the reckless people are getting rich, and you, the careful one, are being left behind.

This is the engine that drives a mania, and it is worth naming plainly. A bubble is not just wrong prices. It is wrong prices plus a wonderful story plus the sight of your neighbours getting rich, all at once, for so long that your patience starts to feel like a punishment. That last ingredient - time - is the poison. Being right too early feels exactly like being wrong, and a mania can stay alive far longer than your willpower can.

So when we talk about a careful investor "caving," let us be fair to them first. They were not standing in a calm room making a calm mistake. They were standing in a storm of envy and noise and daily proof that everyone else was winning, being asked to keep saying "no" while the reward for saying "yes" seemed to grow every single day. That is the pressure. Now let us see what it does to a person.

The two fears that fight inside you

To really understand why even a disciplined person gives in, we have to look at the tug-of-war going on inside their head. Because there are two very different fears fighting each other, and most people only ever notice one of them.

The first fear is the obvious one: the fear of losing money. This is the fear that keeps careful people careful. It whispers, "That company earns no profit. The price is crazy. If this story ever cracks, you will lose a lot." This fear is your friend most of the time. It is the voice that put you outside the bubble to begin with.

But there is a second fear, quieter and sneakier, and it grows louder the longer a mania lasts: the fear of missing out. This one does not whisper about losing money. It whispers about losing face, losing ground, being left behind. It says, "Look at them. Look how much they've made. You're supposed to be good at this - how can you just sit here while people who know nothing get rich? Everyone will think you've lost your touch." This fear is not about your wallet. It is about your pride and your place in the crowd, and that makes it especially hard to argue with.

Here is the key idea. In a normal market, the fear of losing money is stronger, so careful people stay careful. But in a long, roaring mania, something flips. Day after day of watching others win slowly starves the first fear and feeds the second. Every week the price climbs, the fear of losing money feels more and more like a false alarm, while the fear of missing out grows fat and screaming. Eventually, in a person who has been resisting for months, the second fear can grow so large that it simply overpowers the first - and they jump.

how loud the fearmonths of a rising mania →fear of losing moneyfear of missing outthe cave-incareful people jump here -right near the top
The two fears, over the life of a mania. Early on, the fear of losing money is bigger, so the careful investor stays out. But as prices keep climbing for months, the fear of missing out swells while the fear of loss shrinks - until they cross, and even a disciplined person caves. [illustrative]illustrative

Look carefully at where the two lines cross in that picture. The cave-in does not happen at the start of a bubble, when prices are low and there is real room to rise. It happens near the end, after months of climbing, when the fear of missing out has finally grown large enough to win. Which means the disciplined person, if they crack, tends to crack at the worst possible moment - buying in high, right before the story runs out of road. The very lateness of their surrender is what makes it so costly.

Watch it happen: the careful uncle who couldn't watch anymore

Let us put real rupees on the table and watch a careful person cave, step by step, so we can feel the pull ourselves. illustrative

Meet Vikram, a man everyone in the family trusts with money advice. For years he has invested calmly and sensibly, mostly through steady monthly SIPs into plain index funds, and he has done well precisely because he never chases excitement. He has ₹40,00,000 saved - a lifetime of careful work.

Now a mania arrives. A cluster of new companies - let's say they all claim to be building some dazzling new technology - start rising like rockets. Vikram looks at them the way he always does. He reads the boring reports. Most of these companies earn no profit; some barely have a real business. He shakes his head and says a firm "no." Sensible Vikram stays out, exactly as he should.

But the prices do not stop. Month one, they double. Month two, they double again. His younger cousin Aman, who knows nothing about investing and just bought whatever was trending, has turned ₹5,00,000 into ₹20,00,000 in half a year. At every family dinner, Aman is glowing, buying rounds, teasing Vikram: "Still playing it safe, big brother? You're going to miss the whole thing." Vikram smiles tightly and says nothing. But inside, the second fear is growing. Every week that these stupid stocks climb, his careful "no" feels more like cowardice.

By month eight, Vikram cannot take it anymore. He has been right - these companies still earn nothing - and being right has cost him nothing but feels like it has cost him everything, because everyone around him got rich while he sat still. So he breaks. He tells himself a story to make it feel wise ("maybe this really is a new era, maybe I'm the one who's stuck in the past"), and he moves ₹25,00,000 - more than half his life's savings - out of his calm index funds and into the very stocks he had been warning the family about. He buys near the top, at prices he himself had called insane just months earlier.

Here is the honest scoreboard of what happened next. The story cracked, as overpriced stories eventually do. Within a few weeks those hot stocks fell roughly 70%. Vikram's ₹25,00,000 became about ₹7,50,000. In a matter of weeks he gave back years of patient, careful gains - not because he didn't know better, but because for one long stretch he couldn't stand not being part of the crowd. The most careful uncle in the family made the single most reckless move of his life, and he made it precisely because he was surrounded by winners for too long.

Notice the shape of this. Vikram's ruin did not come from ignorance. He knew. He had done the reading. His disaster came from the pressure - the daily sight of a confident, winning crowd wearing down a correct judgement until it snapped.

Watch it happen again: the one who noticed the feeling and named it

Now let us watch a different person face the exact same storm and come out the other side, so we can see what actually protects you. Because it is not being smarter than Vikram - it is something quieter and more usable than that. illustrative

Meet Haridya, who runs a small business and invests on the side. She is not a genius. She reads the same boring reports Vikram does and reaches the same conclusion: the hot companies earn nothing, the prices make no sense, she will stay out. So far, she and Vikram are twins.

Then the same mania roars, and Haridya feels the same pain Vikram feels. Her friends are getting rich. Her WhatsApp groups are full of screenshots of huge gains. She feels the pull, sharp and real - the whisper of you're being left behind, you fool. Here is the only difference between her and Vikram, and it is the whole chapter: instead of obeying the feeling, Haridya notices it and gives it a name. She says to herself, plainly, "This burning feeling is not new information about those companies. Nothing about the actual businesses has changed. This is just the fear of missing out, and it is trying to get me to do something I already decided was foolish."

That small act - catching the feeling and naming it out loud - is what lets her hold on. She writes herself a short note and sticks it on her desk: "The story is exciting. The numbers are empty. My 'no' was based on the numbers. The numbers haven't changed. So my 'no' shouldn't change either - no matter how much everyone is winning." She keeps her ₹40,00,000 exactly where it is, in her calm plan, and she stops checking the hot prices because looking at them only feeds the fear.

When the story cracks and those stocks fall 70%, Haridya loses ₹0 of her savings to the mania. Her money is entirely intact. And here is the part worth sitting with: she was not smarter than Vikram. She had the same information and felt the same pull. The only thing she did differently was refuse to let the crowd's confidence overrule her own careful reading. Haridya did not predict when the bubble would burst. She did not need to. She simply refused to hand her savings to a story she had already judged empty.

Put the two side by side. Same storm, same knowledge, same feeling. Vikram obeyed the fear and lost ₹17,50,000 of real, hard-earned money. Haridya named the fear and lost nothing. The gap between them was not intelligence. It was one person's ability to hold their own judgement when a confident crowd was screaming that they were wrong.

Why it's the winning crowd that gets you, not the losing one

Now let us go one layer deeper, because there is something subtle here that most people get backwards. We assume that what makes us cave is doubt - that we cave because we start to believe the crowd might be right. But usually that is not it at all. Vikram never really stopped believing those stocks were overpriced. He caved anyway. So what actually did the pushing?

The answer is that a winning crowd is far more dangerous to your discipline than a losing one. If everyone around you is losing money, it is easy to stand apart - nobody is making you feel foolish. But when everyone around you is winning, standing apart becomes agony, because every gain they make is a fresh little proof that you were wrong to stay out. It is not their argument that wears you down. It is their results. A confident crowd that is also, for the moment, being rewarded is the single hardest thing in the world to stand against, because the reward looks exactly like evidence.

Let me show this with numbers, because the arithmetic of the pressure is worth seeing. illustrative

Suppose Arjun starts with ₹10,00,000 and, being careful, earns a steady, boring 12% in a year - he ends with ₹11,20,000. A perfectly good result. But his neighbour, riding the mania, turned ₹10,00,000 into ₹30,00,000 in that same year. Now look at what Arjun feels. He did not lose anything - he is ₹1,20,000 richer! But sitting next to a neighbour who is ₹20,00,000 richer, his honest, sensible gain feels like a loss. His brain quietly does a cruel subtraction: "I'm ₹19,00,000 behind where I could have been." That imaginary gap - the ₹19,00,000 he never actually had - becomes a real, gnawing pain. And that pain, repeated month after month, is what eventually pushes a careful Arjun to abandon his 12% plan and chase the neighbour's 200% - usually just in time to catch the crash.

rupees at year-endcareful plan₹11.2Lmanic winner₹30Limagined loss:~₹19L younever had
The trap of comparison. The careful investor actually gains money (green), yet feels a huge 'loss' because they measure themselves against the manic winner instead of against zero. That imagined gap - money they never had - is the pain that eventually makes them cave. [illustrative]illustrative

Once you see this clearly, a powerful defence becomes available to you. The pain that pushes people to cave is almost always a comparison pain - measuring yourself against the luckiest person in the room instead of against your own honest goals. And comparison pain is optional. Arjun's real question was never "am I beating my neighbour?" It was "am I moving steadily toward the life I want, without risking ruin?" By his own honest scoreboard, he was winning. He only felt like a loser because he borrowed someone else's scoreboard. The moment you stop measuring your progress against the mania's biggest winner, most of the pressure to cave simply evaporates.

Building the fence before the storm arrives

Here is the practical trouble with everything we have said so far: in the heat of a mania, when the fear of missing out is screaming, you are the least able to think clearly. Willpower is exactly the thing that runs out. So the real skill is not "be strong in the moment." It is to build your fences early, in a calm season, so that when the storm comes you do not have to rely on willpower at all - the fences hold for you.

Let me show what such fences look like with one more worked example, because "have discipline" is useless advice, while "here is the exact rule you wrote down" is something you can actually use. illustrative

Meet Aarohi, who learned from watching her uncle Vikram cave. Long before any mania, on an ordinary quiet Sunday, she wrote three plain rules on a card and put it in her wallet. Rule one: her monthly SIP of ₹20,000 into her boring index funds continues no matter what the market is doing - she never stops it to chase something exciting, and she never adds a big lump to a story she can't explain in one sentence. Rule two: she is allowed to gamble on thrilling things, but only with a small "play money" pot she has capped at ₹1,00,000 - a fixed 2.5% of her ₹40,00,000, an amount that, if it went to zero, would sting but never wound. Rule three: during any mania, she stops checking the prices of the hot stocks daily, because she knows that staring at other people's gains is what feeds the fear.

Now the mania comes. Aarohi feels the same burn everyone feels. But watch how little her feelings matter, because the fences are doing the work. Her SIP keeps flowing into steady funds on autopilot - no decision required, so no willpower spent. Her itch to gamble is real, so she scratches it with her ₹1,00,000 play pot and no more - and even if that entire pot is wiped out in the crash, she is out ₹1,00,000, not ₹25,00,000. And because she isn't refreshing the hot prices every hour, the fear never grows to the monstrous size that broke Vikram. When the story cracks and the hot stocks fall 70%, her damage is a bruise on a tiny play pot; her ₹40,00,000 core is untouched and still compounding.

See the difference in method. Vikram tried to be strong in the moment and lost, because the moment is precisely when strength runs out. Aarohi arranged things so that she barely had to be strong at all - the important choices were already made, in writing, back when she was calm. That is the real lesson of how a disciplined person avoids the trap: not by having superhuman willpower during the storm, but by building the fence before the storm ever arrives, so that caving would take effort instead of being the easy thing to do.

Where people trip up

The slip is almost never "I decided the crazy price was actually sensible." Careful people usually keep their heads on the facts. The slip is that they let a feeling - the ache of being left behind - quietly take the steering wheel while their thinking brain looks the other way.

Here is exactly how it works on you, so you can catch it. First comes the correct judgement: "this is overpriced, I'll stay out." Good. Then comes the long, grinding stretch where you are right but everyone else is getting rich, and your correct call is punished daily by rising prices. Then comes the dangerous little story you tell yourself to make caving feel wise: "Maybe I'm too old-fashioned. Maybe this time really is different. Maybe the smart move is to adapt." That story is not new analysis - it is your fear of missing out wearing the costume of open-mindedness. And once you have dressed the feeling up as a reason, you jump. The tragedy is that you knew better the whole time; you just could not bear knowing better any longer.

Where this idea can mislead you

Now the honest part, because even this lesson can be twisted into something foolish if you push it too far.

The first way it misleads: "the crowd is always wrong, so I should always do the opposite." That is just as silly as always following the crowd. Sometimes the crowd is right - new industries really do grow, and steady, sensible optimism about a good business is not a mania. The lesson is not "reject whatever is popular." It is narrower and wiser than that: do not abandon your own careful judgement just because a confident crowd is winning. If your honest analysis says a popular thing is genuinely good and fairly priced, popularity alone is no reason to run away from it. The enemy was never the crowd. The enemy was letting the crowd overrule your own reading - in either direction.

The second way it misleads: thinking that discipline means never changing your mind. It does not. A careful investor absolutely should change their view when the facts change - when a business genuinely improves, when new and better information arrives. What Vikram did was not "change his mind based on facts." The facts had not moved at all; those companies still earned nothing. He changed his behaviour based on envy while pretending it was a change of mind. The skill is telling the two apart: updating on new evidence is wisdom; caving to social pressure while calling it new evidence is the exact trap. Ask always, "what fact changed?" If the only thing that changed is how much everyone else is winning, then nothing that matters has changed.

And a third, quieter caution: this chapter is not saying disciplined people are frauds or that discipline doesn't work. Quite the opposite. It works almost all the time - that is why the person in this story was successful for so long. The point is humbler and more useful: discipline is not a trophy you win once and keep forever. It is a muscle that can be worn down by enough months of pressure, and even the strongest version of it has a breaking point. Knowing that you can crack - that no amount of past success makes you immune - is exactly what lets you build the little guardrails (a written rule, a scoreboard that is your own, a habit of not staring at the mania) that keep you from cracking when your turn comes. The people who think they are too smart to cave are the ones most likely to.

Carry forward

  • A mania is not just wrong prices - it is a wonderful story plus the daily sight of other people getting rich, kept up for so long that your patience feels like a punishment. That is the storm in which even careful people crack.
  • What makes a disciplined person cave is almost never new facts; it is the ache of being left behind by a winning crowd. The cure is to notice that feeling, name it as social pressure rather than evidence, and refuse to hand your savings to a story you already judged empty.
  • You win far more by avoiding the one big unforced error than by cleverly predicting the future. You do not need to time the top of a bubble; you only need to not chase it. Keep your own scoreboard, stick to a sound plan, and stop measuring yourself against the luckiest person in the room.

even the calmest, most disciplined investor can throw away years of careful gains in a few weeks - not from ignorance but from the pain of watching a confident crowd get rich while they sit still - so when a mania roars and everyone around you is winning, name the burning fear of missing out for what it is, remember that the numbers haven't changed just because the prices and the noise have, keep your own honest scoreboard, and let your discipline beat the pull of the crowd instead of the other way around.

Connects to these principles

This is my own plain-English understanding of the book’s ideas, written in my own words with my own ₹ examples, so you can relate it to the real book’s chapters. It is not the book and reproduces none of its text - if the ideas help, please buy the book. Not affiliated with the author or publisher. Figures marked [illustrative] are constructed to demonstrate a method, not reported as fact. Educational only; the author is not SEBI-registered and nothing here is investment advice.