After all the fall festivities and the joy and warmth of the holiday season, the shorter days and longer nights of snow and rain can wear on a person. Colder climates are tough for everyone, in body as well as in mind. It all can nonetheless be an isolative feeling, despite its pervasive nature and the severity with which it can manifest itself. Indeed, sometimes the post-holiday slump can be something more. Sometimes, it can be seasonal depression.