You didn't sell at the top in the last bull market, and you got caught deep. You grit your teeth and vow: It's okay, I just paid tuition fees. When the next cycle comes, I will strictly follow the take-profit discipline. After four years of waiting, the bull market has really returned. Your account finally got out of the red, and even doubled. But at this moment, your initial strict take-profit plan has long been forgotten. You look at the screen filled with messages like "Super Bull Market is here" and Bitcoin reaching 20