I don't exactly get depressed, but I'm learning not to have a Norman Rockwell version of holidays. Try to enjoy what is---not want I wish it would be. Go out to have a Thanksgiving dinner--turkey and all that stuff; buy some gifts for needy children, since I don't have any at home anymore, etc. Listen to Christmas music; even watch those sappy Christmas movies and live through other people
We've had a Christmas Day gathering here at My Support Forums for the last several years--where people can get on a thread and visit; pretend to bring food, etc. Even gifts would be fun.
We could do that for Thanksgiving, too, if people are interested.