I'm a situational writer. You give me a situation, like a writer gets in a car crash, breaks his leg, is kidnapped by his number-one fan, and is kept in a cabin and forced to write a book - everything else springs from there. You really don't have to work once you've had the idea. All you have to do is kind of take dictation from something inside.
Only that, nothing more - a tiny beam of light to show some hidden aspect of reality, to help decipher and understand it and thus to initiate, if possible, a change in the conscience of some readers.