I am almost 4 months along since a horrendous split, all I can tell you is that it gets better with time, even though some days it feels like you are going two steps backwards at times. The good outweighs the bad eventually, you just can't be too hard on yourself, and you have to let yourself grieve. It's okay to miss him, it is okay to wish things had been different, but then you have to ground yourself in the reality that is. Which is likely the best case scenario and the way things are meant to be anyway.
I was fortunate in that I had already crafted a marvelous life for myself before I met my now Ex, and that I had never given it up while we were together. I had something to return to, even though at times it was the most difficult thing to do. As a result I have become closer to my daughter, among other good things that have happened. Get out and live, it is the least you can do for yourself. Jim Unger, the guy that drew the "Herman" comics, said "All the happiness in the world is between your two own ears." I wonder if he and your Dad knew each other?
Hugs to you. You will be just fine, I know it.
