I actually did take Vitamin D and 5-HTP for quite sometime (still take 5-HTP), and it did help me a little bit. My problem was the fact that every time I go outside to head to work/school, it's either raining, cloudy, foggy, or a combination of the three. And I used to love rain and fog when I lived in California, but it didn't last for 6+ months at a time.

Waking up in the morning during the winter has been the worst part. I have always been an early riser, but when I just moved here, for about a year I could barely get up at 9am.