I’ve long had this wish that it’d be possible to live inside the ground zero of nostalgia. This is more of a daydream, along the lines of sci-fi and the idea of teleportation. My more realistic version of trying to embody the bittersweet peter pan root of nostalgia is to imagine training myself to adapt my thinking to nostalgia, the way Buddhists train themselves to be zen or recovering alcoholics train themselves to be sober. That’s what December is like for me. I know that Christmas Day is at its most basic a few hours of exchanging gifts, a few hours of cleaning up afterwards, a couple hours of appreciating the gifts and then a festive dish for dinner; that is at least the make-up of my Christmas days. There is no getting around the fact that Christmas ends. Nonetheless, every December I plan which Christmas light displays we’re going to drive to and marvel at and which Christmas movies feel the most special to me and will be watched a milli...