Keep writing these memories down - especially the bad ones. You don't have to go back and read them - ever if you don't want to.....but just let them be there in moments of weakness...because there will be some.
I have some great friends that are happy to remind me of "unacceptable instances" when I get sentimental. The anger easily takes over my sadness....and I will take anger over pain at the moment. I had enough of the latter with XABF to last me a lifetime.
(((HUGS)))