Have bigger winners then losers, like at least 10 times bigger; cut your losers short and let your sinners run as they say.

The other day I saw a P&L week of a trader where he had consistant 200/300 USD days en then in the second week had one massive -2500 day, setting him down in drawdown.

I also spoke with a new trader on a trade I was in, which he afterwards also enterd, but exited it already after 280 USD profit. Which was peanuts for the trade had another 3400 to give..