The Science of Being Well :

The Science of Being Well by Wallace D. Wattles is a no-nonsense guide to achieving perfect health through the power of thought, right living, and mental alignment with the universal principles of well-being. Rejecting the idea that health is solely determined by external conditions or heredity, Wattles lays out a simple, actionable path to vibrant health based on thought discipline, gratitude, and natural habits. This book is a cornerstone of the New Thought movement and remains a transformative resource for those seeking to take control of their physical well-being from the inside out.