Rules are simple: 20% I keep, 80% stays in the bankroll, and as much as possible, I don't take my profits immediately whenever I don't need to but instead use it on other things or just let them sit on stand-by in case the price dips and I can buy immediately. Most of the time, people are eager to take their profits and use them in buying nonsense stuff that leads to being broke and losing all their hard-earned money. It feels good to reward yourself with something nice, yes, but thinking for rewards short-term loses you the chance to gain even higher in the long run.