On gray days, I turn all the lights on in my apartment. My friend use to call me a sunshine girl. I had to smile, because a Toronto paper featured a Sunshine Girl in their Saturday addition. I wasn't sure if his idea and mine came from the same place.
For me, the sun is healing and I need to get out in it. If I don't I have to get out the Vitamins "C" and "D." I also take Vitamin B compound.