There are a lot of things that frustrate me. I get frustrated when I have to wait at a red light.
At the end of the day, you're responsible for yourself and your actions and that's all you can control. So rather than be frustrated with what you can't control, try to fix the things you can.
I think we were all kind of frustrated with the referees. We felt like they called a (expletive) game. Thirty-something to 17 fouls, that's crazy. But at the same time, we still had a chance to win it, but we just never could pull it together.