A new idea is threatening to keep me from finishing my novel. Gah!
It never fails. I can see the very faint light at the end of my first draft tunnel. Then a new idea (for a screenplay) invades and occupies my brain.
It was looking like Iraq inside my head. I didn't want to keep writing my book. I wanted to brainstorm the new thingie.
Beware this tendancy, writer babies! It's something your writer-brain does to keep you from finishing things. The old stuff pales and you think, meh, no one else will ever love it, and now that I think about it, it's kind of dumb... and oh! Shiny pretty new idea over here will solve all my problems.
It's like buying new make up when you've got three half-used blushes in the drawer and five different lipsticks that are all the same color.
Stick with the old! Finish that last pinky brown lipstick before you buy a new one. Scribble down your thoughts on the new idea real quick so you don't forget it, then Finish Your Novel.