So focus on getting words on the page rather than getting it perfect in the first draft.

The most important is that the writer’s original perception of a character or characters may be as erroneous as the reader’s. Running a close second was the realization that stopping a piece of work just because it’s hard, either emotionally or imaginatively, is a bad idea. Sometimes you have to go on when you don’t feel like it, and sometimes you’re doing good work when it feels like all you’re managing is to shovel shit from a sitting position. (Location 890)