Takes on other jobs when writing an article or review, or acting, but cannot when writing a novel:
"I don’t take another job. I don’t do anything. I go up to my house in the country and pull out all the plugs, virtually. I just do it nonstop until I’m finished. I envy writers who can write on planes and take a break for a week and then get back to it. I have to get into a sort of zone. [...] With writing, I don’t know what it is. I just have to get into a complete world. It has something to do with an inability to concentrate, which is the absolute bottom line of writing."
More how we work.