Anyhow, here's what Cec asked me to post. I hope it will help you. Maybe it'll do me some good as well.
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Susan asked: How do I turn off my internal editor when typing that first draft?
I plan to write about that issue later, but here's a brief answer: It takes self-discipline. The more self-demanding you are, the more difficult the task.
I had to keep reminding myself that I could go back and clean up the mess after I'd written it. I also reminded myself that I would probably never finish if I stopped to make changes.
Most professionals write first and edit second.