Mental strategies for loose games

You know the person. He bets with any two, and he shoves with any ace. Exploitative play against this kind of player dictates opening up your ranges yourself. But this means you will lose a lot and often. How do people deal mentally with the kind of variance that comes with this type of play?

Come with a heavy bankroll that can withstand the variance, and a willingness to rebuy until the fish’s chips are in your stack. Expect to lose a hand here or there, but to make a mint in the long run.