I'm going through a similar situation. But ultimately your path to salvation is to take Rubirosa's advice: improve yourself, for your own sake. But a side effect or benefit is to become the kind of man that if your ex ever got a glimpse of who you became or what you are now, she'd kick herself and think "Oh my God, what did I do?"
It's normal to be sad and depressed for awhile and to beat yourself up, but at a certain point you have to move on and do things for yourself. Go to the gym, get off facebook, focus on your career, get busy with a personal project or a hobby, nurture your friendships...that's all you can do. You can't control what your ex thinks, feels or does. No Contact is now for you to heal and figure out what you want to do with the rest of your life.
