Why does having a heavier position make it easier to 'understand' the market? When we hold light positions, we can see both bullish and bearish signals. But once the position gets heavy, our eyes only focus on information that benefits us. After going long, whales transferring funds to exchanges can be interpreted as preparing for a pump. Breaking support levels can be explained as a shakeout by the big players. Even bearish news can be packaged as the 'last chance to get in.' It’s not that the market suddenly becomes clearer—it’s that your position is choosing the answers for your brain. I used to think I was sticking to my judgment, but later I realized that many of my opinions were just excuses for my holdings. The heavier the position, the higher the cost of admitting mistakes, and the easier it is to block out opposing evidence—even doubling down to prove the initial decision wasn’t wrong. True professional trading isn’t about looking for support after entering a position; it’s about proactively writing down counterarguments before entering: What scenarios would invalidate my logic? At what price point must I reassess? If I didn’t hold a position now, would I still buy? If the answers change, your position shouldn’t keep answering for you. So controlling your position size isn’t just about managing losses—it’s about protecting your judgment. Only when a single trade can’t hurt you deeply do you have the ability to objectively view the market. Remember: Once your position size starts affecting your emotions, you’re no longer trading the market—you’re trading your own obsession.