There's A Fine Line is a book that shared principles in business and life that separate the winners from the rest of the pack. The book outlines startegies and patterns that will help any business person or salesman achieve a higher level or activity and prodcution in their careers. Mark interviews several seccessful individuals at the end of the book from all walks of life such as CEO's of major corporations, entrepenuers, pro athletes, professors, bankers, and more.... The interviewees answer the followiong 2 questions:1. "If you could point to one aspect of your personality that contributes most to your success in business, what would that be?".2. "If you could go back and do anything over, what would that be?"