You will find plenty of money management advice about stop less limits and win goals. You should always remember that these kinds of arbitrary stopping points in your betting do nothing to improve your probability of winning.
In fact, with a game where the house has an edge over you, the appropriate sized bankroll is infinite. But if you want to walk away a winner one in a while, you should set a win goal that signals you when it’s time to quit. Depending on the size of your bankroll, this wen goal might be small.
I played video poker one night and wound up winning about $40 in 15 minutes. My win goal was to double that $40 at the roulette table, and I thought since it was “house money”, I do just bet it on black. I won and walked away from the table. I was with my dad, and he seemed impressed. He should not have been, though, for 2 reasons:
That was not the house’s money anymore. Once you win it, it’s your money. Player away all your winnings because you think the money does not really belong to you is just foolish.
I wagered that money on some of the worst odds in the casino. I do have been far better off putting it on a hand of blackjack or even a roll of the dice at the craps table.