Old movies rerun

Why do you like to watch movie reruns? Or why do you watch the same movie over and over again?
Maybe because you like to live in that moment. But is that moment a happy one? Based on personal experience, the movie that we keep rewatching, need not be a happy one. It might even bring tears, sadness, etc to us. So why do we still persist in watching them again?

The same can be applied to your anger. You felt that you were mistreated at work, and hence your anger rises. Once the situation is over, what do you do? Do you let go of your anger?

Most people don't. Instead, what they do is to re-run the incident over and over again. But is there a point to it? By doing you, you are keeping yourself in suffering. You are keeping yourself in anger. (or in worry).
And you are the only one that is upset. Others have already let go and moved on. So why persist in keeping yourself in anger.

Let it go....you are only creating your own suffering by rewatching old movies.