How can I survive Christmas?

I am not much of a family gathering person and to be honest, I am not looking forward spending a week with my parents, or even three days with my sister and her family. Could be fun for a couple of hours, but I always get terribly bored (and boring) and restless. Note: I have a kinda sad relationship with my family, which brings a lot of tention to gatherings like this. Probably only me and inside my head, but still, it’s a lot of anxiety inside me…