Relax and notice any attempt to self punch or to judge yourself. Recognize the mental and emotional pain it brings. Imagine that you are or your awareness is a guardian standing in front of the door to your heart and self punching activities are some malicious beings or forces that are trying to invade your heart. You are a skillful martial art master who is dispelling these forces by labeling them “self punch”. Notice how the quality of your mind state changes when you label these self punching activities of the mind.