One of the challenging things about the holidays is that they're "supposed" the be joyful. Be happy, be merry, enjoy your family - and if you don't, you must be doing it wrong. But families can be challenging and grief can be relentless at the holidays especially.
No matter how into the holidays you are (or aren't) they come with a lot of stress. Travel, money, schedules, and routines in turmoil, that one really annoying brother-in-law - it can all add up.