Good job, reading books to help you be in better control of your thoughts. I wish we were allowed to give titles and authors b/c another member (Pack) struggles with ongoing thoughts about his sitch, especially when he is home alone.
I can suggest that it was helpful to look for advice on the subject of betrayal but from a Christian (or at least spiritual) view. I would also add, that for books dealing with the cultivation of thought, to start with books that have been around a while and still make reading lists. For me, I also am still looping in Christian values but I've read some from other faiths or belief systems that have helpful guidance.
I wish I could PM but I don't have enough posts yet. I may try to find his thread and see if I can offer advice, or at least a word of encouragement.