Dances, you have a support system here if you need it. I'm not sure how private messaging works over here, but if you do, we're all here to help however we can. I know there's a "PM so-and-so" response people throw out anytime someone mentions divorce, only I have no idea who that so and so is. I think there was a divorce thread on the previous version of this board; someone please help him out with that.
As far as weight loss goes, I have gained and lost weight more times than Oprah. And Oprah wipes her ass with my salary. I've done the treadmill, elliptical, and weights, but the one exercise that helped me mentally AND physically, was walking. Low impact, get some fresh air, a good easy way to start, no asshole instructor yelling at you to pick up the pace.
Finding a new hobby, or in my case, devoting more time to an old hobby (guitar), is another thing I'd recommend. Give yourself a fun project and just get immersed in the details of that project. Even if it is something you can't do, you can still admire it. Two examples: I'm not an architect, but I am fascinated by stadium architecture, both here in the United States and beyond. I'll spend hours looking at pictures of Camp Randall Stadium and Camp Nou, and I'm not a fan of Wisconsin OR FC Barcelona. Similarly, I can't cook barbecue at all, but I'm fascinated by pit design, and how that influences the taste of the food. Offset, Reverse Flow, Bewley, hell even a Kamado sparks my curiousity.
Again, these are all just suggestions from some guy trying to be helpful to another guy on the internet. Hopefully something here helps.