BTC你55000美金买入，然后涨到60000美金，你非常开心，接着BTC继续上涨，涨到了65000美金，你更开心了
但是很快BTC就从65000美金跌到60000美金，这个时候你生气了，你竟然后悔没在65000美金卖出，因为这样你就可以多赚5000美金了。同样是60000，你的心态却变了。

Emotions can play a big role in investment decisions. It's important to stay rational and stick to your initial strategy, rather than letting feelings like regret or anger dictate your actions. Keep a cool head and focus on long-term goals.