One less painful way to endure Christmas music is to listen to recordings that are strictly instrumental, that way you can have holiday music on, but tune in and out without it distracting or bothering you too much through the day. Somehow it's less grating on the psyche when there are no vocals in the music (I know, I know... don't tell the other vocalists), and the words are less likely to be stuck in your head all day (which can drive you crazy even more).
Even better than all-instrumental Christmas music, is when your holiday tunes are all about the swing! Below is an article written for Helium back in November of 2012, and if I do say so myself, I think it's one of my best. Enjoy, and keep swinging!