I have a bad tendency to get rapidly bored with my own material, so rewriting is hard for me. I mean, I already know the story and would rather read something new. ↗
Rewriting is a large part of the whole job. And get rid of stuff that's not working. Just pare it down until it's a beautiful thing you can hand in, probably late, to your editor. ↗
And after you've done the acting, there's a lot of places you can put your input - in the editing, in the production of it, in the rewriting of it and so on. ↗
More than a half, maybe as much as two-thirds of my life as a writer is rewriting. I wouldn't say I have a talent that's special. It strikes me that I have an unusual kind of stamina. ↗
When I need the idea, I can find it immediately. I have a horror of rewriting or deleting; the parts of my composition are carried in my head 'till I can write them down, even to the last note. Then I do not alter a jot. ↗