Zach Mercurio, Ph.D., is a researcher, author, and speaker who specializes in purposeful leadership, mattering, meaningful work, and positive organizational psychology. He wrote "The Power of Mattering: How Leaders Can Create a Culture of Significance" and "The Invisible Leader: Transform Your Life, Work, and Organization with the Power of Authentic Purpose." Zach works with hundreds of organizations worldwide to forge purposeful leaders who enable mattering, motivation, well-being, and performance. Some of his clients include the U.S. Army, USA Wrestling, J.P. Morgan Chase, Delta Airlines, Marriott International, The Walt Disney Company, The Government of Canada, and The National Park Service. He also serves as one of author Simon Sinek’s “Optimist Instructors.” Zach earned his Ph.D. in organizational development from Colorado State University where he serves as a Research and Teaching Fellow in the Department of Psychology's Center for Meaning and Purpose and as an Instructor in the Organizational Learning, Performance, and Change program. His research on meaningful work has been awarded by The Association for Talent Development, The Academy of Management, and The Academy of Human Resource Development. Zach lives in Fort Collins, CO with his wife, two sons, and two adopted dogs.