I'm sorry to hear that, SS.
I don't have any advice but I can relate some experience. My marriage was chaotic and rocky since its inception. My wife tried in vain for years to get me to quit. Alcohol became the focal point of her anger and energy.
When I finally went to treatment, stayed sober and few months had passed, guess what? She still wasn't happy and didn't know why.
We haven't split up, although we've discussed it some times. Now, though, we have to work on our real issues which is VERY hard to do.
I sincerely feel for you. Good luck.