Consciously choose the events you will go to. Know why you are going. It's OK to say no. Even too many good events can get stressful. If you have a new family configuration this year due to a divorce or death or kids leaving home, feel free to develop a new tradition.
Traditions are good as long as they serve their purpose.
If they are stressing you out, they have outlived their purpose. If you have lost a family member to death, perhaps you could memorialize that person, by going to the hospital and visiting sick patients in their honor. You could hand out small gifts or have the kids decorate cards or ornaments to hand out. Involve the whole family. Bag the tradition all together and serve on a food line for the homeless.