I too have two beautiful children, though I haven't seen them in seven years; after I left my wife and children, my wife moved abroad. I didn't really care at the time, all I wanted to do was drink and be left alone, but it hurts now; and coming to terms with it has not been an easy thing to do.
However, I am sober today and have been for nearly a year, thanks to the fellowship and programme of AA; and who knows, maybe there'll be a happy ending with regards to me seeing my children. There's more chance of it happening if I'm sober than not happening if I'm drunk or dead.