As the author, Greg McKeown (b. 1977) serves as a guide, sharing practical strategies and actionable advice to help readers integrate essentialism into their daily lives. A renowned speaker, writer, and leadership consultant, McKeown has dedicated his career to helping individuals and organizations discover the power of essentialism and its transformative effects. With an MBA from Stanford Graduate School of Business and a background as the CEO of McKeown, Inc., a leadership and strategy design agency, McKeown has expertise in both research and practical experience in the field of leadership and personal development. He draws from a diverse range of sources, including historical figures, spiritual traditions, and contemporary examples, to illustrate the principles of essentialism and their application in real-life situations.

McKeown’s writing style is a notable aspect of the book, as he infuses the text with personal anecdotes and reflections. Through direct and indirect characterization, he shares his own experiences, thoughts, and reactions to underscore the challenges and rewards of embracing essentialism. By incorporating his own journey and vulnerabilities, McKeown attempts to establish a sense of authenticity and relatability to make the concepts and strategies more tangible for readers.