I was a sahm married to cheapskate jerk who stressed about money and made me feel like I couldn't enjoy life. I hated it. He was always a grouch and sucked the joy out of life. I suggested therapy and meds for him and he wanted no part of that. I'm divorced now with a great career and I enjoy my life and take care of myself. I take vacations, eat at nice restaurants, I buy quality clothes, get my hair and nails done. The only debt I have is my mortgage on my condo I bought on my own. Life is too short to worry about money and it's way too short to spend it with a miserable person.
At least your DH is open to self-improvement. GL