Have you tried doing some sports instead? Cycling, swimming or even a long walk in the park are decreasing at least my depression and anxiety and while doing sports at moderate levels, with good hydration, I don't feel the need for sugars anymore. I'm also fat, in love with chocolate products, cakes and sweets don't survive the day uneaten in my home, no diabetes so far. I don't recommend running because of it puts to much strain on the knees.
I have had a mixed relationship with fitness. Something that works for me is audiobooks and walking. The book keeps things interesting and makes it easy to lose track of time. There isn't much activation energy required either, you just grab the headphones and go. It gets really fun when you find a great book.
