The reason is nothing more than: heavy trading, losing money, making money and running fast.
Heavy trading thinks that you earn fast, but the result is a faster loss, and you can invest all your money faster.
In the face of losses, there is always a chance to come back, or always expect to win back, or even die without stopping, and the result is really dead.
There are many people who make money and run fast. When they lose money, they simply can't hold it. When they made a little money, they ran away. As a result, they always earn less and lose more. In the long run, they always end up losing money.
There is also a very special situation, that is, when there is profit, I always feel that I can earn more, but I just don't want to stop playing. When profits decrease, I still think that profits will come back and continue to increase. When the profit has turned into a loss, I will return to the previous situation, and the loss will be very painful, and all roads lead to the same goal. Finally, I will lose my blood.