...Not sure who you think doesn't want to change- in my case, the person who needs the change as far as SSM is concerned is mainly me, but as I said, he will not let me do anything about it anymore. I now understand the ramifications of not changing, but as he says, "it's too late".
I can only share my experience. My wife said she was not going to change, because there was nothing wrong with her. The two therapists helped her sort out her emotions (anger toward me) and then helped identify "baby steps" that she could take, if she wanted to take them. They then pointed out that change was going to happen one way or the other (divorce or my working with her to have us become sexual partners). Luckily for me I had changed the way I treated her and started to make her feel loved in her languages of love a few months earlier. Ultimately, be both have changed since last September.
For my wife and myself, I believe it turned out not to be "too late."
You and your husband are the only two people who really know if change is no longer possible.
Good luck to you.
>43 years of marriage--My wife and I are now closer than we have been in decades. I believe that my SSM is over.