What to do when life has you in a rut? - Anger issues

Just so I can get a better understanding of the situation and give you better advice hopefully; Are you having the "raging" type of anger issues or the "self-blaming" anger issues?

So if say you are playing a video game and something goes wrong, are the type to say:

a) fuck this game, its fucking retarded anyway
b) omg why did I screw up this game, I suck at everything

If we are talking about a), I'm not too sure what type of advice I could give you unfortunately.
However, if we're talking about b), you should understand that these type of things stem from confidence issues (which may be caused by having been bullied throughout your life). If you are struggling with b) I would suggest you look into yourself, learn to accept yourself for who you are and understand that everyone makes mistakes, everyone has problems and these things can easily be taken care of if you keep a cool head.