I know exactly what you mean. Before I moved out I was furious but didn't say anything. After I moved out I would have 10 or more fights everyday with her, in my head. Exercise was a big help, so was jiu jitsu. Posting here helped a lot and like TG said it just kind of faded away. As I focused more on me and what I needed to do I let go of the past and the anger that was attached to it. I have been putting a lot of work into living in the now. I've done a good job of letting go of the past. Still need more work on not fussing about the future.
Progress not perfection.