This came down to an original wound for me. From childhood.
For years I thought I was a victim of scapegoating.
After years of therapy, I recovered the memory that my mom blamed me for my fathers death when I was only 13 years old.
I never thought much about it, consciously, but it was an underlying driving force in my life.
This kind of trauma can happen from something much less extreme, too.
It leaves you with a plug into the role of scapegoat, and you would keep playing things out in life to try to "resolve" the issue.
This is what I had going on. I was desperate to not be blamed for things, to the point of avoidance behavior.
With my ex AH, it manifested in staying through years of heck...Because he pushed those blame buttons so well.
This is a link to getting into the self stuff. Its a worksheet for releasing yourself from blame.
I had to/have to do it a few times a year, but it really is helpful.
You can print it and do it, its free online.
http://www.radicalforgiveness.com/pdf/SFSAWritable.pdf