" Newton’s First Law, also known as the Law of Inertia: Objects at rest tend to stay at rest unless acted on by an outside force. Objects in motion tend to stay in motion, unless something stops their momentum. Put another way, couch potatoes tend to stay couch potatoes. Achievers—people who get into a successful rhythm—continue busting their butts and end up achieving more and more. "

― Darren Hardy , The Compound Effect: Jumpstart Your Income, Your Life, Your Success