That depends partly on what you are writing. For academic writing I agree, take the time to get it right. But for writing for the market, especially as advice

That depends partly on what you are writing. For academic writing I agree, take the time to get it right. But for writing for the market, especially as advice to amateurs, I like Heinlein's advice, "Never rewrite except to editorial direction." Market writers need to get their work out there where editors can see it, or they can't sell it. And amateurs have a notoriously hard time bringing themselves to stop tweaking and start trying to sell it.