The Compound Effect: by Darren Hardy Key Takeaways, Analysis & Review The Compound Effect: Jumpstart Your Income, Your Life, Your Success is a self-help book by the publisher of SUCCESS magazine, Darren Hardy. It describes how small attitude and behavior adjustments, when applied with consistency, can result in significant life changes… This companion to The Compound Effect includes: Overview of the book Important People Key Takeaways Analysis of Key Takeaways and much more!