Despite my previous post, I think that rewriting is not a bad thing. In fact, I think it’s a good thing and sometimes necessary.
And thus something that needs to be learned by everyone, even by people who don’t ever rewrite. Someday you probably will have to.
If you look around her site, you’ll find plenty of other writing advice. I know I’ve visited more than once to do that!
Also, SF Novelists has an article by Diana Pharaoh Francis on the art of revising: 10 Things learned in the course of novel revising.