I'm really happy you have hit on what works for you.
BTW, I drank about as much as you did and also took benzo's.
Turned out to be a really bad combination, as you have also learned.
For me, I have been a member of AA for many years and I have taken meds which have completely controlled my anxiety and depression for many years as well.
The anti-depressants have really worked well for me, so, for others wondering what to do for relief, I wouldn't exclude trying them under the care of your doctor.
I also recommend AA - it has been instrumental in my getting and staying sober.
Glad you're here.