I just happened to run across this post about using light therapy… There is a lot of information about it if you will Google it… But a few things I would like to say because I do use the light therapy as well. Do not look at the light as it might injure your eyes. Put it off to the side a little bit. Instructions will come with the light. This light causes a chemical change in your brain that lifts your mood. The room doesn’t have to be dark and it doesn’t feel like I’m out in the sun, no. I am usually reading while I have it on or watching TV. I do think it helps me a lot… Good luck