Merry Christmas, Happy Holidays, Hanukkah, Kwanzaa, Boxing Day, or whatever else you might celebrate this week.
I don't think there is one right way to celebrate this special holiday season, unless you have religious requirements, which change less than societal ones. If it feels good to have big family dinners, and it's still possible, then great. If that time is past, head for a mountain cabin for a few days in the snow-- or the beach where the waves strike a relaxing sound.
If you don't have the time or money for going somewhere, make your home special with a candle or two, seasonal music, or a Christmas movie. White Christmas is on Netflix and it's always a go-to for me at this time of the year just for the music if nothing else.