You can do it. It sounds like you are already healthy so a few simple steps every week (not all at once or you can easily burn out) should help. Plan realistic changes you can make this week and then the week after that. Good luck!
I gained 15lbs in two months post-diagnosis and insulin (dx in sept). I've managed to lose 5-8 lbs of it (depending on the day) but I would ideally be 10lbs less than what I am now. I sublet an attic room so working out up there is not really an option and I dont feel as comfortable in my new kitchen yet in order to start cooking (recent move) a lot of healthy food. So I need less help with motivation and more help with solutions for working out, eating well.
Keep me posted