Wow does this not happen to us all one point in time or another. We all have stress and when we cannot deal with it we tend to play the things like a tape or a record over and over again. It is like an act of self inflicting injury.
The best thing I do to deal with such situations is I resort to listening music or go for walks as it relieves my stress levels and helps me think clearly. If it persists than one should seek counseling and stop subjecting oneself to such pain