First, stop trying to convince yourself your marriage is over. Just stop. Go back to DR and learn to act "as if." If you think it is over, then it will be so. Acting as if everything will be ok may change the path you are on. Perhaps you need some positive affirmations. Try writing down your affirmation every morning 30 times something like "I'm love my wonderful marriage to my husband." You'd be surprised how it can help reprogram the way to think about things. Writing/reading something repeatedly will help embed it in your mind. It becomes part of you and your attitude then can't help but change.
Next, set some goals for yourself and GAL. Keep it simple. Perhaps one goal could be, "I'm going to go out and meet/talk to five new people every day" - anybody, like the checker at the grocery, a librarian - be social and learn about people you don't know. Perhaps a goal will be to build strength/endurance - like I can only run 1 mile, but I will run a little more every day until I can run a marathon. Whatever fits you, it doesn't really matter, but set goals yourself and then work towards them. Once you begin achieving these goals, you'll be surprised how much of your power you'll begin to regain.
Let us know how you make out.
"Nobody can go back and start a new beginning, but anyone can start today and make a new ending." - Maria Robinson
M: 45 WAW: 36 T: 17 M: 14 Kids: D9 ILYBNILWY: 6/2010 W left: 2/2011 W back: 2/2012