Don't freak out.
Bake prodigious quantities of shortbread and share.
Accept gifts graciously and be surprised; expect none.
Replace the traditional tree with festive garland, hung far outside baby's reach.
Appreciate the temporary increase in available work hours. Be prepared for a crowded commute, stressed out customers and a nonstop holiday themed Muzak soundtrack. Remember, it's just cheese. Remember to taste the cheese.
Feast without guilt but also without obligation.
Relish your fondest memories of snowy days while basking in sixty degree sunlight.
Dine with friends.
Watch as many of the following movies as you can:
Christmas in Connecticut
Emmet Otter's Jug-band Christmas
It Happened on Fifth Avenue
It's a Wonderful Life
Meet Me in St. Louis
Santa Claus (MST3K version)
The Shop Around the Corner
A Very Brady Christmas
Don't spend all of Christmas Day cooking a meal too big for just three people. Go out for Chinese, instead.
Drive south on December 31st. Greet 2013 in a completely different place.