"I've gone out on occasion with friends and family, but not much. I haven't been to mall shopping or bought anything for myself in so long!"
You start by reversing this. Go out with your friends and family again. Treat yourself. Take care of yourself.
All the stuff you said you used to do...painting, etc. Do them again. Build yourself up and the rest will follow. Show your H you can support yourself. don't sell yourself short. Read books, take classes, go to the gym. Anything that will help to build your shattered self-esteem.
From a guy's POV, your H is an @$$. Show him you deserve better by treating yourself better.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.