Desiring God blog reposted this entry from last year. It was written by Jon Bloom and gives great perspective on post-Christmas emotions.
Each year Christmas night finds members of my family feeling some melancholy. After weeks of anticipation, the Christmas celebrations have flashed by us and are suddenly gone. And we’re left standing, watching the Christmas taillights and music fade into the night.
But it’s possible that this moment of melancholy may be the best teaching moment of the whole season. Because as long as the beautiful gifts remain unopened around the tree and the events are still ahead of us, they can appear to be the hope we are waiting for. But when the tree is empty and events are past, we realize we are longing for a lasting hope.