When people talk about trading psychology, the advice is always the same: “control your emotions and you’ll win.” It sounds wise and it’s nearly useless, because it treats emotions as a glitch to switch off. The truth is more uncomfortable, and more useful: trading doesn’t test your discipline, it tests a brain that evolved for something else entirely. And the first thing to understand is that the rush you feel when you open a position is not the reward. It’s the warning sign.
Let’s start with a figure that brokers rarely put on the front page.
Trading psychology: before the tricks, the numbers
In a study that became a classic of behavioral finance, Brad Barber and Terrance Odean (2000) analyzed more than 66,000 real trading accounts. The result: those who traded most earned the least — an average annual return of 11.4% against the market’s 17.9%. The gap wasn’t bad luck: it was overconfidence. The better we think we are, the more we trade; the more we trade, the more we pay in fees and mistakes. The title of their paper is a blunt warning: “trading is hazardous to your wealth.” Keep it in mind, because everything else starts here: the problem, usually, isn’t that you lack a strategy. It’s that you trade too much.
And I’m not saying this as a spectator. I’ve traded since 2018 — today with reduced capital, and with months and years in the red, as happens to anyone who actually trades. In 2020 I closed my best year, with a personal return of 61.97%. Precisely for that reason I hold myself to an honesty that applies first of all to me: that year offered exceptional conditions, and in a racing market it’s all too easy to mistake luck for skill. It’s a trap I take seriously. But I’ve kept getting results in far less generous years too, and that is exactly what showed me where the real difference lies — and it isn’t only in me. I know how seductive the rush of a racing market is, because I’ve felt it; and I’ve learned to distrust it.
Why trading feels like a slot machine
There’s a neurological reason it’s so hard to stop. When a bet almost works out — the price that grazes your target and then turns back — the brain doesn’t react as if to a defeat, but as if to a half-win. In an experiment with a simplified slot machine, Luke Clark and colleagues (2009) showed that “near-misses” are experienced as less pleasant, and yet they increase the urge to play again, activating the same reward circuit as a real win. And the effect is stronger when the player feels in control of the bet — exactly the sensation of someone trading. It’s the same mechanism that makes gambling addictive. Put bluntly: if opening a position gives you a jolt of excitement, that jolt isn’t a sign you’re on the right track. It’s a sign your brain has mistaken the markets for a casino.
Risk isn’t calculated, it’s felt
Here’s the point that turns the manuals’ advice on its head. We think we assess risk the way a calculator would: probability times consequences. In reality, as Loewenstein and colleagues (2001) showed with the “risk as feelings” hypothesis, when facing a risky decision the emotional reaction and the rational assessment often diverge — and when they diverge, emotion usually wins. It means the fear that makes you close too early, or the greed that makes you raise your leverage, aren’t “noise” on top of a clear-headed decision: in that moment they are the decision. That’s why “control your emotions” is poorly framed advice. It’s not about switching them off — you can’t — but about noticing that they’re choosing in your place.
So what makes the difference?
Not a secret indicator, and not becoming an emotionless robot. What makes the difference is recognizing the automatic programs running beneath your decisions — the urge to win back a loss right away, the euphoria after a winning streak, the need to “do something” when the market is quiet — and managing to step back before they press the button for you. It’s work that has nothing to do with charts and everything to do with the mind: learning to see your own automatisms and, where needed, rewrite them. It’s exactly what I deal with when I talk about mental reprogramming.
There’s also a second antidote, and I’ve tested it on myself. The trader shut away alone with his own mind is the most exposed: the blind spot — the euphoria after a winning run, the mistake that’s yours and that for that very reason you don’t see — someone else notices before you do. Having a group that acts as a mirror has been a concrete part of my results: in my case a mastermind group, with someone in it who knows trading better than I do. It’s not a slogan, it’s the practical flip side of everything I’ve said about overconfidence — and it’s a theme I’ve believed in for a long time. I talk about it separately when I cover the law of mastermind alliance.
And it’s worth saying plainly: trading psychology is just the most extreme case of a much broader subject. The way we risk, spend, earn, and lose money is driven by the same forces — fear, reward, belonging, the illusion of control. Understanding them is the heart of the Psychology of Money: not to beat the market, but to stop being beaten by your own mind.
