I thought of Christmas as a day to completely relax. That doesn't mean my brain agreed with me.
I kept thinking of different scenes I'd love to include in the book. Like a dummy, though, I didn't write any of them down and now they're lost to the "that's a good idea, I'm sure I'll remember it" graveyard.
So I've decided to carry a small notebook around. I've heard this advice a million times but I've never been so obsessed with an idea that I thought about it almost constantly.