Many people think trading cryptocurrencies is simple, just buy low and sell high. But when they actually get involved, they realize that the hardest part isn't judging the market, but controlling themselves. The following points are the strict rules I set for myself after falling into some traps. They may not sound pleasant, but they are definitely practical.

The first rule, and the most important one, is: don't follow your emotions. When prices are rising rapidly and everyone is rushing in, don't join in; when prices are falling sharply and everyone is afraid, you should instead calmly look for opportunities. This is easy to say but very hard to do. I’ve also learned my lessons—chasing highs gets me trapped, and cutting losses during a pullback leads to losses. These are lessons learned the hard way.
The second rule is: never invest all your money at once. Going all-in is like risking your life savings; if your mindset gets shaky, your trading will go off course. The market is never short of opportunities, but if you have no cash on hand, you can only watch opportunities pass by. Keep some reserve funds so you can trade with peace of mind.