Never use all your bullets at once. Divide your funds into a dozen parts, and only use small positions for each trade. If the direction is correct, gradually add; if wrong, just run. No matter how aggressive, you must ensure you can afford to lose.

Stop-loss is life. Don't wait for a rebound; trigger the stop-loss immediately. Many people lose because they are hopeful when they should be exiting.
After losing two or three trades in a row, immediately close the software—never gamble out of frustration or force trades. When the rhythm is off, no matter what you do, you'll lose money.
Every month, take out a portion of the profits. The numbers in the account are virtual; only the money you withdraw is real. Without drawdowns, profits can't be preserved.
Only trade the markets you understand. When the trend is clear, you can profit even with your eyes closed. During sideways markets, stay firmly in cash. Missing an opportunity isn't a loss; reckless trading will definitely lead to losses.