Crocodile Rule
Assuming a crocodile bites your foot, if you try to use your hands to free your foot, the crocodile will bite both your foot and your hand at the same time. The more you struggle, the more tightly you will be bitten. Therefore, if a crocodile bites your foot, your only option is to sacrifice one foot.
In the cryptocurrency market, the Crocodile Rule is: when you find that your trading is deviating from the market direction, you must immediately cut your losses, without any delay or any sense of luck.