I have discovered a motivation to write (besides the deadline).
It beats scraping dried on, rock hard tile adhesive from between the tiles so that I can grout (and sponge and re-grout and re-sponge and it's all under the cupboards so I'm bent in an L shape).
I don't know why I'm having problems writing; I like the characters and their story has come together nicely and I'm almost there. I'm just feeling lethargic and have been for ages. Done a lot of original writing this year so far... it's more tiring than fic.