Always operate with only 10%-20% of disposable funds, for example, if you have 100,000 in deposits, you should only invest a maximum of 20,000. I've seen too many people bet their entire fortune or even borrow money, only to have their mentality collapse in the end. The real winners are those who can 'afford to lose.' For example, with a dollar-cost averaging strategy in Bitcoin: invest 10% of your monthly salary in batches; even if the bear market drops by 50%, it won't affect your quality of life.

【Stop-loss is more important than profit｜5% mandatory stop-loss line】

When the direction is wrong, a 5% loss must be immediately cut off. I once held on during the LUNA crash, watching 100,000 turn into 1,000. Now my discipline is: exit when the short-term dips below the 5-day moving average, and liquidate when the mid-term breaks below the 20-day moving average. Remember: as long as you're alive, there’s a chance to turn things around.