During the 2021 bull market, my friend Xiao Zhou, when he turned $20k into $350k, I advised him to at least take out half to lock in profits, but he insisted, "It's not the target price yet."

As a result, three months later, the market suddenly turned sharply downward, not only losing all the gains but also losing his principal completely, and he had to find a job to slowly pay off his debts.
Stories like this have never stopped in the crypto world.
Over the years, I’ve summarized three ironclad rules for survival: when your investment triples, take out half of the principal; when the profits double again, take out half again; never go all-in with all your money, and never chase after coins that are skyrocketing.
Newcomers often ask me, "How much profit is enough?" I always ask them in return, "First, think clearly—how much are you willing to lose?"