Mark O'Donnell is a highly successful entrepreneur, CEO, and Expert EOS Implementer. He is the current Visionary and CEO of EOS Worldwide and has also served as head coach for the company. With over 100 companies under his belt, Mark has helped numerous companies achieve their goals and get what they want from their businesses. As a serial entrepreneur, Mark has founded and sold multiple successful businesses. His passion for helping people live their ideal lives led him to his current mission of assisting one million people with tools like those found in the Entrepreneurial Operating System. Mark is a lifelong learner and an alumnus of Albright College, Northeastern University, and The Wharton School at the University of Pennsylvania. He lives outside Philadelphia, Pennsylvania, with his wife, mother-in-law, three children, and his one-hundred-pound dog, Blue

Sue Hawkes started her first business at age 10, selling door-to-door with her best friend. She's upgraded her offerings since then, but she's always been obsessed with helping people and solving problems. Today, she helps high-achievers create winning cultures where accountability thrives-by gracefully tackling the tough stuff head-on and clearing any friction that slows people (and profits) down. Sue is a keynote speaker, best-selling author, Certified Business Coach, CEO of YESS!, and Expert EOS Implementer(TM). If there's friction in your company, she'll help you name it, face it, and solve it-for good. Sue brings the tools and the truth-telling to help you fix your business challenges permanently, without wasting time. She's the co-author of the most recent EOS Mastery Series book, Issues: Remove Friction, Fast-Track Your Growth, and Ignite Your Greatness, coming in April 2026. In it, she and her co-authors name the things most teams avoid and give you tools to solve whatever is in your way-once and for all. Sue has been featured in Forbes, Fast Company, Inc., and Entrepreneur, and earned numerous leadership awards for her transformational work with companies across the globe. She's here to help you stop avoiding what's hard, lean into what matters, and lead like you mean it-with clarity, purpose, and just enough humor to make it all stick.

Jill Young is best known for her ability to lift and encourage teams in inspiring and creative ways, or as she calls it, MAGIC! Since 2014, she has coached hundreds of leadership teams as an EOS Implementer based in Dallas, Texas. She is the author of The Advantage Series, a collection of books to help leadership teams become their best, the Creatrix of Coaching Magic, a school for passionate and dedicated coaches, and she served as head coach of EOS Worldwide. Jill loves cocreating projects (like this book!), leading active workshops and facilitating transformational experiences. Connect with Jill at JillYoung.com.