I am just reading the Spark (by Dr. Ratey) book recommended by someone on this forum (sorry - can't find the post). It suggests that you can "rewire" your brain concerning some things, using exercise, but I'm not very far along in the book, and don't know if anything can be done about memories. It's a great book, though.

I do have a problem with crying at the end of movies, which DS4 thinks is odd, since I sometimes cry even when the ending is happy.