Hi, My name is Ninjassin and I am a Rager...

In game i am self conscious of me raging at my teammates, but after games i always regret it. I don't know why I rage at other players. It seems so uncontrollable, but sometimes I try my best certain games, but then other players rage at me and I can't help but to bring out my own inner demon. What can I do to prevent this? Muting helps, but I can't mute myself.