Hi, I have a lamp and it's done wonders for me. I go to school in Scotland so I'm here in the winter when it's darkest and grayest and generally blah-est, and the light, along with medication and therapy, really helped. I use it for up to an hour each day and I started noticing a difference after about a week. It's not a cure-all, but it gives me that little boost I need in order to get through the day.

Hope this helps.