Trading cryptocurrencies is not only a technical skill, but also a psychological battle. Your mindset determines success or failure, and friends should remember a few key mental strategies:

1. Don't be greedy: Seeing the price of coins soar, thinking about "getting rich overnight," results in buying at a high point, leaving you anxious as the price drops. Investment requires caution; greed is the biggest enemy.

2. Have a plan: Set target price levels before investing, decisively take profits once the target is reached; cut losses decisively if it falls below the baseline. Don't let emotions dictate your actions; planning is key.

3. Learn to wait: The cryptocurrency market changes rapidly, sometimes requiring patience to wait for opportunities. Don't operate blindly, going with the flow. Learn to analyze the market and understand how to seize the moment.

4. Diversify investments: Don't put all your eggs in one basket; diversifying across different coins can effectively reduce risk.

5. Mindset for the long haul: Trading cryptocurrencies is not something that happens overnight; it requires long-term attention and learning. Continuously learn new knowledge and keep up with market dynamics.