I have known two compulsive gamblers very well. It is mind-blowing what their addiction did to their lives. They each had issues with depression, which I believe the gambling seemed to somewhat relieve short term. You need help managing your mood disorder as part of your plan to address the compulsive gambling. I think it's great that you have decided to join GA. Finding alternative ways to keep your mind busy also sounds like a good plan.

My friend who has gambled addictively has told me that she would look at the money in her wallet and think, "I could possibly double my money, if I bet it." At times she would draw up elaborately detailed budgets on her computer and projections of when she would have her credit card debt paid off. Every year she'ld be deeper in debt. The other day she called to ask if she could borrow some money to do her laundry with. She's literally down to nothing. She's smart and she's educated, but this habit seems to me like being possessed by the devil. She buys very little food, in order "to pay my bills." She looks seriously malnourished with a lot of muscle wasting. Her gaunt appearance is what really alarms me. Your symptoms may be different, but I suspect you have your areas of self-neglect.

Good luck with your recovery. If it goes off the rails, start over again.