What I've done to help my anxiety and depression during the winter (I live in MN so our days get short, not as short as Alaska, but short none the less) is I have "Full Spectrum" light bulbs in my bedroom and in a desk lamp I brought to work. They are kinda like florescent bulbs, but throw off the full spectrum of light more like sunlight. They are a little more expensive then regular or florescent bulbs, but much cheaper than a "SAD" light. I've never used a SAD light, but these bulbs seem to help me. Keep that in mind when you are craving sunlight.