Always emphasize three things:

First: Make sure your margin is sufficient.
Don't use thin funds to hard hold the market.
Second: Control your position size.
Try to keep each position within 20% of the total funds.
Third: Have clear take-profit and stop-loss levels.
Take profits when targets are reached, cut losses when they hit, and don't fight the market.
In fact, many people lose money not because they are wrong about the direction,
but because their position sizes are too large and their pace is too aggressive.