The Power of Now by Eckhart Tolle is a spiritual guide that explores the concept of living in the present moment. While not directly related to business strategy, this book offers valuable insights into mindfulness and the importance of being fully present in all aspects of life. Tolle's teachings on letting go of past regrets and future anxieties can help business leaders cultivate a mindset of clarity and focus. This book is recommended for those seeking a deeper understanding of themselves and their purpose.