I agree with booldawg, nothing more Christmassy than singing carols in a church or listening to choirs in a cathedral. Walking round a christmas market when it's frosty and a cup of mulled wine in your hand helps too.
I posted the same as you yesterday stylinsam - read some of the answers I had they really did cheer me up - apart from the humbug marvinparvin!!! She/he's a Xmassy bumhole pain!!
I feel much more Xmassy today so hope you will by tomorrow too!!! The mincepie with icing sugar snow and a sherry did it for me.