A friend who made a fortune by speculating in cryptocurrencies told me:

1. Leave when you make a lot of money, take a rest, or travel around the world to relax.

2. If you lose more than 10% in a row, be sure to find out the reason for the loss to avoid getting stuck in the quagmire.

3. If you are doing short-term trading, don't trade if there is any ambiguity. Such opportunities are most likely to cause losses.

4. Don't follow up if the increase exceeds 50%. Such opportunities are often traps. It is easy to get stuck when buying.

5. After a continuous surge, don't be jealous of the high volume. It is usually a trap. Control your emotions and don't buy.

6. Buy low when weak, and buy when strong.

7. Don't add positions if you don't understand the situation and are not 100% sure. It is safe to build positions in batches at low levels.

8. Operate the currencies you want to buy in a familiar mode to make risk-free money.

9. Don't do callback transactions below the weekly line to avoid heavy losses from early intervention.