Hi Beth,
I have SAD and use light therapy when the days are very short. It doesn't work for everyone, but it has helped me get through the winters. It lifts me out of my depression just enough to be able to get motivated to do other things that help me cope with SAD.
Along with the light therapy, which I use at night when I'm reading a book, I listen to different binaural beats through ear buds, and also practice some meditation, as well as various easy yoga postures. Focused breathing for a minute or so helps too. All these things I do are by no means a cure for SAD, and I've never heard of a cure for it. I find doing all these things prevents me from hiding out, and not communicating with anyone. I wish you much peace and well-being and here's a big hug to you. Thanks for sharing! You're appreciated