Well , I have the same thing to deal with . I have some rules , like for example if I make a big mistake , I sit out for 1 min to relax/forget it and later come back and in the end I study why made that one so I won't repeat it again . If I don't do this step I won't play for two or more days (for discipline ) . If it's a bad beat and it's not my mistake , I just try to relax at once and forget it , if I can't I sit out for some time if possible . If it's a cashgame , on a badbeat , I don't buy-in again , I stop playing (I remember in the past once losing 9 buins in a row only just because I wanted to win-idiotic ) . Play with good phychology , listen to some relaxation music , eat drink sth , play when you're calmed down and always by the rules , strategy and BRM , don't fancy play , it's just cards