Light a candle or buy an ornament to help you bring a reminder of your loved one into your home for the holiday. Do only the things you think are most important for you and your family. Buy a gift in the name of the one you lost and donate it to an organization where it will be appreciated. Attend a religious service of your preference. Keep in mind that it is OK to leave if it too difficult.
Some people think it helps to get away for awhile.
Donate your time by volunteering where needed. Start a snowball fight or build a snowman with the neighbor kids. Others have tried many different things to help themselves during the holiday season and there certainly are many more. Try things that may have worked in the past. But if they don't work this year, try something different.