SAD..Seasonal affective disorder.. how do you northern guys deal with it?

I always used to think this was just baloney lazy bullshit. I'm in central Wisconsin.. go to work in the dark, sit in a office with a small window up above my head I can't see out of. Leave in the dark. When I get home, I just want to eat, and go to bed. No ambition. Lots of thoughts during the day..and just no energy to do anything. In the summer, the wife has a hard time getting me to come in by 10 on a weekday, having fun doing stuff. It's almost 8:30 and I'm not in bed yet.. odd for me right now.
Just wondering if any of you get this way in the winter.. and what you do, if anything, to get motivated.

What do I do to get motivated in the winter time? I start drinking heavy in early November. Switch over to cocaine by April. Enjoyed the big Christmas feast of roast Koala bear. And am now looking forward to Easter dinner with Hannibal Ham topped with real Russian dressing.