Wow Finished. So sorry you're here. I wish there were concrete answers for all your questions--sure would make it easier, wouldn't it?
The only thing I can think of to share with you today is this: we all are or have been in situations that feel completely lost and hopeless. In my own experience, I think the thing I've learned most is that change IS possible, and that it's really up to me. And time is my friend. BTW, my H's first affair lasted well over 18 months, so don't focus too intently on where you are time-wise.
You have already been working on your GAL (congrats on your weight loss!)--keep it up and keep looking for new ways to strengthen your connection with who you really are.