The holidays can be so stressful that the techniques experts recommend year-round for stress relief probably have their roots in this time of year. Counter stress by taking care of yourself emotionally, mentally and physically.
Find your balance. Take responsibility for those things you can control. Recognize that you may have to let some other things go.
Nurture yourself. That's not the same as spoiling yourself. It means a bit of self-discipline and organization, but it pays off handsomely. Get plenty of rest. Drink plenty of water. Exercise. Avoid chemical aids (don't overdo the caffeine or the alcohol). Avoid negative people. Engage in random acts of kindness.
When you can, prepare ahead of time -- set the table for breakfast before you go to bed; set out the clothes you plan to wear to a party a few hours early. Treat yourself to breakfast in bed.
If the telephone interrupts your dinner, or your catnap, or your bedtime routine, let the answering machine get it for you. Just return the calls later.
Source: Dr. David D. Burns' "Feeling Good: The New Mood Therapy."