Best way to deal with pent up anger so that you don't take it out on others?

First off, if I’ve come off as bitchy lately, I apologize. In fact, a few times in the past few weeks I have said things on Fluther that were out of character.

I’ve been feeling angry about things that I have no control over and unfortunately, as a result, I’ve lashed out at others.

I don’t like being like this.