Speaking of light therapy, I've been musing on this for a few years now:

I prefer the dark. Period. I don't like bright light; never ever been a great fan of it. I prefer to lurk in the shadows. I feel more comfortable there. Though I realize that light therapy makes sense, I wonder if my avoidance of light has to do with fear of exposure, or is it just a personality quirk?

Since I was diagnosed with PTSD last month, I have been researching like a mo-fo and in light of my history I wonder what actually defines my personality vs what is the manifestation of my PTSD/depression/anxiety.