Have confidence and no fear. Take inventory of your strengths as a partner and a person.
"I don't want to think/analyze everything he does anymore!! I really want to detach so I don't have to feel this way anymore... but I can't seem to find the strength to do it. "
So just do it. I give you 'permission' to be all about you and your children.
Be kind, not cold, but not 'into' him. Be 'into' nurturing yourself.