Most writers stop when they run dry. Hemingway did the opposite, and he believed it was the single most useful habit he ever built.

The Direct Answer
He stopped while it was still going well and he knew exactly what would happen next.
By quitting mid-flow instead of writing himself empty, Hemingway guaranteed a running start the next morning. He called it never emptying the well, and he treated it as his defense against getting stuck.

Stop While You're Going Good

The rule is simple and it runs against instinct. When the writing is flowing and you know what comes next, that is exactly when you stop. Not when you're exhausted, not when you've hit a wall, but at the moment you'd most like to keep going.

The best way is always to stop when you are going good and when you know what will happen next. If you do that every day when you are writing a novel you will never be stuck.

Ernest Hemingway, Paris Review, 1958

He described the same idea in A Moveable Feast as never emptying the well. There was always something left in the deep part of it, and overnight the well refilled from the springs that fed it. Drain it completely and you face a dry hole the next morning. Leave water in it and you start the day with the level already rising.

Why It Beats Writer's Block

Writer's block usually strikes at the start of a session, when you sit down facing a blank space and no clear next move. Hemingway's habit eliminates that moment. Because he stopped the day before while he still knew what would happen next, he never began a morning from nothing. The first sentence was already waiting. He just had to write it down.

There's a discipline cost. You have to walk away from good momentum, which feels wasteful in the moment. But the trade is worth it. You give up a little extra output today to protect against the far more expensive problem of a stalled tomorrow.

It pairs naturally with his small daily word count. Stopping early and keeping the number modest are two halves of the same idea: never spend everything you have.

For the complete picture of how Hemingway worked, including his desk, his pencils, his revision habits, and the famous theory of omission, see the full Ernest Hemingway writing routine page.

What You Can Steal