You are what you think about the whole day, the reveries where you dwell, the obsessions that capture your undivided attention and the dreams you create. So let go of bad thoughts and have just good ones.
Brett and I do this a lot. Things will start to get heated and then we'll call ourselves on it. "I'm mad a me, you're mad at you,but we wont back down b/c we feel stupid." Just laugh at yourself and move on.