I tend toward seasonal slumps during winter, so this year I took my psychiatrist brother's advice and got a light box - Day Light, from Uplift Technologies, which I bought through Amazon. Since it is sunny and 72 degrees out today on Thanksgiving, I'm not so sure I need it, but I have been faithfully using it each morning. Will it help? I'm sure I would also feel much better in the winter if I exercised twice as much. But heck, I'll take placebo effects as well as real ones. And in any case, on low power it is a fine desk working light. It sits on stilts directly over my computer monitor and shines down beneficently upon me. It wasn't cheap, at $179, but I'm willing to give it a shot.