Having traded cryptocurrencies for many years, the last regret isn't losing money, but making millions of dollars and not selling. During the 2020 market cycle, I heavily invested in one coin, and in just a few months, it multiplied exponentially. I would stare at my balance every day, smiling foolishly, even thinking about which neighborhood to buy a house in. But I made the mistake that most people do: I was too greedy. I always thought it could keep rising, but the market turned around faster than anyone expected, and all the millions of profit I had made was wiped out and given back to the market.

After that, I truly understood that being able to buy is an apprentice, but being able to sell is a master. Later, I set strict rules for myself. First, take profits in stages. When it reaches the target, first recover the principal, then lock in profits, and leave the remaining position to the trend, not expecting to sell at the highest point. Second, set stop-losses in advance. If the loss exceeds expectations, exit immediately. When the market is out of control, execution is more important than judgment. Third, no longer chase the last leg. I don't want the head of the fish, nor do I fight for the tail; I only eat the most stable middle part of the trend.