I went to a sleep clinic for insomnia and the doctor diagnosed me with seasonal depression. Although I've been on Effexor for the same reason for the past two years, my sleep pattern is whacked. He prescribed excercise, therapy and light therapy. I could go to his office and sit under a light for free, but it's 40 minutes away. Option B is to buy one. It's $250 but if it works it would be worth every penny. I live in Ohio where the winter months are dark and dreary.