Make a pledge to be more active, drink moderately, have a more balanced diet, limit sugar intake and get at least seven hours of sleep each night.
Stay active
Make a decision to stay active even in between the interstices of two tasks. For example, take a vigorous walk, or move around and do some less important stuff after lunch.
Get organized
Make a to-do list every day, prioritize events and tasks and plan your work with a practical approach. If you overpromise yourself, that will add to the stress too. So, strike a balance.
Set a budget for shopping
Those alluring sale offers and credit card commercials may convince you to spend more than you can afford. To avoid overspending, set a budget beforehand.
Identify holiday stressors
Is it the shopping, the family gatherings, or hosting parties that you find stressful? Figure out what stresses you, and work on minimizing its impact.