yesterday has already passed. The past cannot be changed. You can't swallow the words that you said, since you already said them. You can't repeat the scene from yesterday in a different way because it already happened & stayed recorded on the film of this world drama. Therefore, don't repeat the words or the scene in your mind over & over again; doing that, you keep alive something that is dead, since yesterday already stayed behind. Learn from the error & commit yourself to you & to your life, promising to yourself that you will not fall over the same stone again. You will think about it before speaking or acting.