I have always tried to have a mindset of "it" working or not working not necessarily being tied to the results of the other person coming back, going back to another ex-BF/GF, or anything like that. I view whether or not "it" worked strictly by how I am doing. Am I in a good place? Am I healthy? I know I am doing great if my health and happiness is not tied to another person.
Changed attitudes can aid recovery -- MY changed attitudes can aid MY recovery.