Hi and welcome Di!
I think it first has to start with you. Your positive changes may make hubby see it can be okay, life can go on, drugs and alcohol do not need to be a necessary part of functioning throughout life. Some have the courage and strength to maintain their sobriety while others don't, I guess it just depends on the entirety of the family dynamics, we're all different. If you want to change, quit, move on, don't let anyone stop you. You've made an awesome start by reaching out here, it's how I started as well, and I'll be clean and sober 2 years in a few months. My hubby keeps his vice away from me, we have a very strong relationship, and life for me is great sober. I had to do it for me, I couldn't stand the sickness, exhaustion, and false life I was leading any longer. I'm good now, so can you be, be strong, have courage, make a plan. *hugs*