You cannot anger yourself when you fail at something or don’t live up to your own standards. For one, that’s not going to get you any closer to success. You’ll only become less focused and feel spent. Second, you’re believing blatant lies when you do that. Your worth in life doesn’t come from your ability to play chess or hit a cue ball correctly, as much as it may feel like it does. Not to mention, the games and skills in front of you are non-essential. You know you have other work that must be taken care of. Your anger at these matters is trivial and should be avoided. Control it.