I tend to isolate in the winter since I suffer from SAD, but this year is going better than past years. The holidays are a great cause of stress, rainyday, but keep in mind that the holidays will pass quickly. When at family gatherings I try to remind myself that my anxiety/depression isn't apparent to everyone...Folks are too preoccupied with other things to notice. Good luck negotiating the holidays; it's highly likely that your present state is simply situational.