I have this powerful memory problem too and continue to be haunted by past failures, remembered childhood traumas and intense bullying. I sometimes even have nightmares about things that cause bad feelings. I've tried time and time again to let go of the past, to forgive my bullies, to put it all behind me but, when I'm down and depressed it all comes flooding back to torment me. These kind of thoughts are self destructive but, when you have a memory that is very vivid and accurate it is hard to let go of things that hurt. Believe me, I know exactly how you feel.