"The most important thing I’ve learned about writing is never write too much at a time… Never pump yourself dry. Leave a little for the next day. The main thing is to know when to stop. Don’t wait till you’ve written yourself out. When you’re still going good and you come to an interesting place and you know what’s going to happen next, that’s the time to stop. Then leave it alone and don’t think about it; let your subconscious mind do the work." — Ernest Hemingway (From Arnold Samuelson’s book, With Hemingway: A Year in Key West and Cuba)
Know when to stop for the day. Know when to stop during the day.
Know when to take breaks.
Don't burn yourself out. You know of burning out after months or years. But, you can also burn out within the day.
Know how to leave some work for tomorrow.
Know how to keep a fresh eye and review your work.
Know when to stop creating and start revising, refining, and "perfecting" your work. Although there's no such thing as perfect.
Ernest Hemingway knew when and how to stop. How about you? Do you know when to stop? To take breaks in between? To leave a little for the next day?
Stop... with a purpose. Then, go at it again.