The reasons why it is easy to lose money in a bull market are as follows
1. Frequent position changes, and the price will rise sharply when the position is changed
2. Sell when it rises a little, run away when it falls, and enter when it rises. The profit is gone after repeated operations. Others make money while you lose money
3. When it reaches a high point, you still want to rise again, but it falls. Remember that there is no permanent high point or low point. The profit from trading is the price difference. You should develop the habit of building positions in batches and taking profits in batches