I've been doing light box therapy for 3 weeks now and WOW! I feel like life is worth living again. The change in how I feel is, well, night and day. My body clock is resetting itself. I have more energy during the day. And I actually feel like leaving the house and going back to work!
Considering where I was not even a month ago, this is a very marked improvement. Geesh, wish I'd done this sooner. Ah well, at least now I know.