You sell at the bottom, thinking you made the right call. Price looks sketchy, so you decide to exit. Then boom—three days later, the coin rockets up 50%, 100%, sometimes even more. Your portfolio notification lights up like crazy, and you're just sitting there watching. It's that special kind of pain that only crypto traders understand. The worst part? You told yourself you'd hold. You had the plan. But then the FUD hit, the chart looked gnarly, and suddenly you're out. That's the game though—sometimes you make the money, sometimes you watch someone else make it. The key is not letting one bad trade mess with your next move.