One of my friends is going through something similar- but not nearly as developed as a fifteen year marriage. He's dealing with throwing away his fiance (4 years of his life). I "threw away" two years of my own for lack of a better term- I guess I did learn from it. I found even that to be tough.
Couldn't imagine what you're going through. Just do what you're good at and make the right choices. Keep your head high.
