You can go through your post and take each part that is YOURS and look at what is your portion, things that YOU can CONTROL. Those are things that YOU need to work on. Anything to do with your W, is not in YOUR control. Her feelings, her actions.
But YOUR feeling and actions are within your control. Your FOO(family of origin) are things to look at and work through. Of course you can not change the past only what YOU do in the present or future. Accept the past and then work towards making a better FUTURE, for YOU.
That is the BEST you can DO. And do it one little step at a time.