stop letting my emotions control me

I’ve noticed it happening so much lately. One little thing will piss me off, and i’ll be pissed the whole day regardless of what i want to feel. Or something will make me very happy and nothing will make me otherwise. Sometimes its a good thing, not always. I just want to be able to have a say in how i feel. you know?

This is a slightly vague goal since I have not defined the point at which I know I have completed it. Nevertheless, it is something that I must do.