Michaelson admitted to Billboard
the title is ironic as it's a melancholic track, not happy at all. She explained that she wanted to acknowledge that for many people the holidays are a lonely time as they are missing someone that they love.
Michaelson added that there's "also something cathartic about hearing somebody sing the thing that you're feeling", especially in the holiday season. She felt it was important to recognize that, while Christmas is a very special time of year for her, there are also some "really, really dark and sad moments."