The festive season is truly bipolar (and that wasn't intended as a pun... cough). To "normies", it's a chance to TOTALLY forget about their waistline and go hell for leather, but to eating disorder sufferers, it becomes tenfold-level of anxiety.
The truth is, it magnifies the person's own inhibitions or lack thereof. So if you're personally insecure, you freak out exponentially by the thought of Christmas feasts etc, whereas a confident person will eat an entire horse stuffed with a goat inside a bungalow-sized roast potato and hardly blink.
What we have to remember, regardless, is that this is the UNIVERSAL TIME OF CELEBRATION. To celebrate giving, family, a brand new year, and new beginnings. But it shouldn't just be about "the season". It should be the start of a new frame of mind... PERMANENTLY.