>>2 sports is good point. I'd suggest regular runs and as well gym if you can afford the membership.
maybe try meditating. and more chillin.
could be as well, that if you are in your teenager years your hormones mess it up and the uber ultra horrible irritation anger comes out. Might be you just need to get your testosteron out :P

or find a girl who you wanna hit on and be gentle to..
or some other activities..
tell us more about yourself, op!