I created this e-card the other day. It's helpful, really.
A was talking to a friend about being nervous before a tournament and he was trying to give me some advice. He said the above, "Someone has to win, right? Might as well be you."
Seems simple. Seems obvious. BUT - it's not obvious nor simple. BUT, this is a very helpful reminder when we play friends or when we find ourselves nervous.
And let's be honest, sometimes winning isn't easy!
Sometimes we are a bystander in our own match, instead we need to be IN the match and be a competitor!
As I mentioned before, you should always try to refocus early. Remind yourself: Someone has to win, might as well be ME!