Winter Depression?

I have no clue what's wrong with me today. I've been extremely moody, short tempered & I don't want to do anything. I don't have the energy to read, write, watch tv, scrapbook, nothing. I just want to sleep. The littlest things have been getting on my nerves I don't know if it's winter depression or what. I'm assuming that it's a combo of everything. Stress is killer especially at this time of the year. I just want to be happy and celebrate Christmas. It may have something to do with my brother being gone and my sister moved out a few months ago. Normally they're around being goofy too. Anyways, lets check out some happy Christmas photos from flickr!!