Anger is best used when it drives us to stay a course and see things through to the end. Great teams get angry. They get angry when what should be isn’t. It keeps them up at night. People tell them it shouldn’t, but it does. Anger that stems from a conviction of what should be motivates us to do something about righting the obvious wrong. GK Chesterton once said, “Tolerance is a virtue of a man that lacks conviction.” Great teams do not tolerate anything less than the goal. Ordinary teams find ways to compromise and therefore never get angry enough to do anything substantial.