At three in the morning, a message woke me up from my sleep.

On the other side of the video is a friend who has been trading spot for two years. Her voice is hoarse, her eyes are red, and she hasn't even washed off her makeup in the video: "My account just got wiped clean... 6500U, all gone."

The situation is very simple - it was her first time dealing with contracts, and she directly opened a full short position with 6x leverage, without even setting a stop-loss line. As a result, the market suddenly surged by more than two points, and her margin was instantly wiped out. By the time she realized and wanted to close the position, the system had already forcibly closed it automatically.

"I watched all night, and just went to the bathroom for a bit, and when I came back, the money was gone..." Her tone was filled with unwillingness.

Later she sent me the trading screenshot, and I couldn't help but frown. She put in 6300U as the principal and went all in, with a position ratio of 100%, without any batching or contingency plan. This is not trading at all; it's clearly gambling her life savings.

Many people believe in the superstition that "only a full position can turn things around," but the market will not show mercy just because you are anxious. A slight increase in volatility can lead to your account going to zero—I've done this before, and that painful feeling can last for several days.

Later, I set a strict rule for myself: **Control a single trade loss within 5% of the total capital.**

Sounds conservative? But at least it allows you to live to see the next opportunity.