Hi Tom!
I can't really say much beyond what others said already and I can only agree. Positive attitude is the key. You just have to find it in you.
Ten years ago I was diagnosed with a serious auto-immune disease that nearly killed me. Treatment was pretty tough on my system and among many side effects (which affected everything from love life to basic day to day social life) I suffered a retinal de-touchment in both of my eyes. Took years to recover from all the surgeries and the side effects of the medication (that I no longer have to take thank god)
Anyway, the only things that kept me sane were music, synths and my job. Staying busy was the best drug for me. With little time left to sit around and feel bad you'll rule the world again. You know, "Use the force".
I can't really give much advice since I'm not in the same boat but I think the main trick is to get over the initial state of shock. From there things get better. At least to my experience. As I said, writing music and tweaking synths was my drug and it pulled me out of depression. Whatever you wil find will work. As human beings we are very resourceful and tough. You'll just have to trust yourself.
Good luck and have a good new year!
-ED-
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A gentleman is one who never hurts anyone's feelings unintentionally.
- - - Oscar Wilde