Another relationship topic -- living/coping with "addicts"

A friend of mine has helped me see that the person I live with behaves a lot like an addict or alcoholic. Only instead of drugs and alcohol, it appears his addiction is sugar. People, including me, who give up sugar notice that it gives us a better mood overall and makes us less irritable and prone to squabbling with spouses. So here I am, off the sugar and other bad stuff, feeling sunny and happy but living with a sourpuss who wants to pick fights with me.
Long ago I used to attend Al-Anon because I grew up in an alcoholic family and ended up attracting alcoholics and drug addicts as partners. It really helped but I haven't attended in a long time. I don't know any alcoholics anymore. I felt like my life had really moved forward. Now I realize I'm living with someone who behaves like an addict or alcoholic and would like to be able to cope better. I use tactics I remember from Al-Anon, but I also see that there are a lot of things I don't cope with very well.
I'm wondering if I should go back to Al-Anon. Other than not having good tools to deal with his outbursts, I don't really feel like my own life needs a lot of changing. Alcoholism is so serious compared to grouchy sugar addiction or whatever his problem is (I don't really know), so I'm not sure I'd quite fit in anymore. I'm happy with myself and happy overall. I don't want to leave him, either. I just want a happy life for both of us, or to at least know that I'm doing all that I can to create a happy life.
Anybody have any similar experience to share?
Female, 5'3", 48, Starting weight: 163lbs. Current weight: 135.
Starting bench press: 30lbs. Current bench press: 75lbs.