When somebody comes to you and says that he is bothered about what happened yesterday or last month or ten years back—and that somebody could be yourself—when you feel that you are bothered with what happened yesterday or ten months back or ten years back, then you should immediately know that something terrible is happening with you right now.
What is the proof? Had the right thing been happening to you right now, then you couldn’t have been bothered with the past.
So, whenever the past bothers you, you should immediately know that some danger is lurking immediately in the present. That is what past does—it serves as a very deceptive distraction from the present.