Watching a coin increase by over 100 times, I initially wanted to hold out for even higher, but I lost my nerve and sold everything. The regret I feel at that moment is still quite painful when I think about it now.

It wasn't until later that I realized that the perfect sell point basically doesn't exist. Instead of striving to cash out everything without losing a single cent, it's better to layer your expectations early on—keep the core holdings to let profits run, so you can participate in subsequent market movements and stay more relaxed mentally.

Lesson learned: In the crypto market, greed is often the biggest enemy. Next time, I will definitely leave some room for myself no matter what.