Instruct: Classify Amazon reviews into positive or negative sentiment
Query: "Water in the desert."

This is a suberb book on a difficult topic. Personally, I believe that Charisma is a spiritual intangible, but Doe Lang does touch on how to bring out exactly that in your own life. The old axiom: "You either have it or you don't" about charisma doesn't apply with this book. Doe Lang gives example after example, and exercise after exercise, about how ordinary people can tap into that magic lantern of charisma that lies asleep within each of us. A scientist, she explains many of her techniques in modern scientific terms and examples; a creative artist, she demonstrates the process through many examples and exercises. I found her process to work. This book is like 'water in the desert.'