Matthew Plunkett in McSweeney's:
Most people don’t believe me when I tell them I write 100,000 words every day of my life. If I’m being totally honest, 100,000 is probably just a baseline number. Some days I exceed a half million words. It’s just what I do. I’m a professional writer. So, if you want to know how you might achieve a similar output as me, here you go.
People ask me all the time, “Hey, how do you do it?” First lesson of writing: never answer direct questions. Not from the guy at the supermarket. Not from the police officer at your car window. Not from your children crying for their supper. Remember, you are on a deadline.
If you want to crank out words at a high volume, dispel yourself of such quaint, artificial notions as “morning” or “days.” They are artificial constructs designed by those who want to slow down your writing. If you’re sleeping, you aren’t writing. I haven’t slept more than 25 minutes at a clip since my sophomore year of college. It’s a small price to pay to hit your daily word goals.