In the summer of 2022, while attending a Harvard-run conference in Cape Cod, I had the opportunity to meet a medical doctor from India named Dr. Deep Singh (Dr. Deep). Dr. Deep practices an ancient approach to healing that harnesses the energy that holds water together to help people clear blockages to their optimum functioning. Despite my initial skepticism of the approach, I agreed to two sessions with him during the conference during which he proceeded to astonish me with his seemingly mystical understanding of my strengths and struggles, both from a physical and emotional perspective. He made me question how much we really know about the universe, and I became fascinated by what ancient cultures may have known, as his approach was based on 5,000-year-old knowledge. Deep: Lessons learned from an enlightened doctor tells the story of how one skeptical mental health professional learned to think differently about the universe and his place in it through a seemingly mystical series of lessons from Dr. Deep and others who ascribe to his teachings.