That's what I'm telling my patients.
Frankly I think for many (certainly not all), significant losses over Christmas and New Years carry a worse prognosis than small gains.
To lose weight over Christmas and New Year for many would require an overly strict approach, a slap-your-wrist, wish you could have seconds, damn that stupid pie, type approach. An approach otherwise known as a "diet".
"Diets" by definition are temporary.
Lifestyles are forever.
Life includes Christmas.
Hope you enjoyed yours.
(And if you did lose, don't feel guilty, just ask yourself if you were reasonably indulgent and if not, perhaps loosen your reins just a touch)