you still have your juice

When I am working on a book or a story I write every morning as soon after first light as possible. There is no one to disturb you and it is cool or cold and you come to your work and warm as you write. You read what you have written and, as you always stop when you know what is going to happen next, you go from there. You write until you come to a place where you still have your juice and know what will happen next and you stop and try to live through until morning when you hit it again. You have started at six in the morning, say, and may go on until noon or be through before that.

ERNEST HEMINGWAY