I suffer from SADD, too. This year, I bought a "happy light" that I use every morning at work. It seems to be helping. You can find them at www.verilux.com (I think that's the manufacturer). I bought mine from Giaim but later found out that verilux sells them directly.

I also started taking 1000 iu/day of vitamin D.

Only 12 more days until we start adding minutes of sunlight to the day.