This is a tough one for me. The main thing I think about it that no matter how much skill i employ, luck will work for or against me. Picking the best spots I can, and making the best decisions I think I can over the long run is winning, but I only feel like a "winner" in the short term. Like, if I'm catching good hands, hitting the flop a lot etc. But then when it seems like I can't catch a break. AA rolled on by 88 who rivered that last 8, man that sucks. And when it seems to keep happening it's hard not to tilt. First I remind myself MY CARDS WILL COME, that's just how the game works. I remind myself of a few times I got lucky myself, or if it's really bad I ask myself how "good' my game is at the moment. If i'm playing good poker, but still losing, well, that just means keep playing good poker, and eventually the upswings will come back. A good book on this is "The Mental Game of Poker."