avoiding Christmas grumpiness

I get reflexively grumpy at Christmas. I don't know why -- aside from the usual complaints people have about Christmas, I've got nothing to gripe about. This year though I'm feeling the usual Christmas exaustion a little more acutely, and it's almost as if it's not just me but everyone, the whole country, that's overextended and exhausted. Anyhow--my wife's here in the midwest with me and is helping me hide my grumpiness behind a smile.