Originally intended to use BNB around 820 for short-term trading, aiming for about 15 points profit before exiting. The last position was initially floating with a profit of about 15%, but it didn't reach the take-profit target, just missed it. As a result, I stubbornly held on until the bullets ran out. When the direction is wrong, I should withdraw. I can't hold the position; even if I have to stop loss, I still didn't close the position even when it retraced to 815. Trading is about understanding human nature: greed. Once you understand human nature and eliminate greed, perhaps you can trade well. #bnb