David Hamilton is a Scottish author and speaker known for his work in the field of self-help and personal development. He has written several books that focus on the power of the mind, healing, and the importance of positive thinking. His writings often emphasize the connection between emotions and physical health. In addition to his books, Hamilton is also recognized for his workshops and talks, where he shares insights on how to harness the mind's potential for well-being. He often draws on concepts from psychology and neuroscience to explain how thoughts and feelings can influence overall health.