" The way a friend of mine describes his approach to work offers a valuable analogy for managing some interpersonal situations: “I have two drawers in my desk. One is for the things I must do something about, and the other is for the things time will take care of.” Time will take care of most people who refuse to let go. Some of these persistent people suffer from delusions, the very definition of which explains why they don’t let go: a false belief that cannot be shaken even in the face of compelling contrary evidence. Most harassers, however, have something less than a delusion, something we might call an alternate perception or an unreasonable opinion. The resolution they seek is usually not attainable, and these people are so confounding because the original issue they cling to is seen from their unusual perspective "

― Gavin de Becker , The Gift of Fear: Survival Signals That Protect Us from Violence