This may seem odd... But trying to work on being more possitive.
The weird thing is I have a positive attitude in 95% of my games. Problem is I have a bit of an issue of holding it in outside the game, and it slowly builds up over the course of a bad game. Sometimes it gets to the point of actually messing me up in game.
The main problem is I kind of have an issue of needing to let out steam very often. And with how I try to remain possitive in chat, and in game I really don't have any proper outlet to blow it on when bad teams show up or bad games happen. I'm trying not to rage at the game through chat, and that usually results in me swearing at the monitor while playing the game. And that has a side effect of making me lose focus in game and cause more mistakes than i'd like to have happen.
Any advice?