Have you ever gone to AlAnon or ACOA? I lot of what you get there is much like DBing, detaching with love, allowing others to live their lives, but you get in person support and a place to learn new behaviors. It can be a great adjunct to what you're doing here.
Your H has problems you can't fix and you really don't know what they are. Give all that to him. You didn't break him, you can't fix him.
Work on you. Who do you want to be?
My condolences on your tremendous loss. ((()))
Me 57/H 58 M36 S 2.5yrs R 12/13
Let me give up the need to know why things happen as they do. I will never know and constant wondering is constant suffering. Caroline Myss