I don't want to write another one of those routine "How to deal with holiday stress" posts.
However, I will say this about my profession. When I evaluate a new patient, part of my diagnostic job is to assess their level of functioning in all areas of life, and to make a guess about their potential levels of functioning. What things do we consider? Social functioning and friendships, home management and organization of personal finances, family relationships, ability to work and at what level, hobbies and avocational interests/activities, conscientiousness, stress tolerance, emotional continence, functional fragility, impulsivity, intelligence, and so forth.
These are personal characteristics which may or may not have anything to do with any DSM diagnosis.
Making a functional life is not easy. While every single day tests those capacities in some ways, I have no doubt that this time of year can require us all to stretch our life-management skills.