Buy when no one cares, sell when there is a crowd.

Tell newcomers: The 20 most profitable secrets in the cryptocurrency world!
Better miss than err. Safety first.
The main reason why most cryptocurrency investors lose money:
Chasing whatever is popular in the community; usually by the time you enter, everyone in the world knows about it, and it’s very likely to drop. This is true for everything, even Bubble Mart has recently dropped a lot. The core of buying and selling virtual currency. Sell when it's bustling, buy when it's ignored.