Well, they end too soon, that's for sure.
But the real problem is this: whenever a holiday is coming up, I think, "Oh, I'll do that after the holiday." I make these little mental lists and put off some tasks, etc., until "after".
Of course, now it's 'after'.
There's also that sense of anticipation, of something to look forward to. The next "anticipation" date I have is 2 weeks away when I'm taking a half-day off.
So it's back to the old routine. At least my WIP is going well -- I spent the weekend getting it off to a good start. Now if I can only continue that, it'll carry me forward to my next holiday....