When you said, "I do......for better or for worse", did you really mean it? You've got alot at stake here. It sounds like you have a great family. Get out there and fight for your marriage. Are you involved in a good church? If I ever needed wise counsel, I would have an endless resource of friends from church and my Pastor. It's time to get to work, brother.
Well said. Quitting is the easy way out. You fought for our country, fight for your family. I've been wrapped up in a dark place before too. There is light on the other side. Go find it. It took med for me and it might for you, but you won't know til you go.