Our own frequent commenter Matt Rouge has published a book! He's the coauthor with JB Symons. The book is called Getting to Why, and you can read about it here:
http://gettingtowhy.com/get-the-book
Here's a description from the above website:
Getting to Why is a practical guide to finding your highest purpose, fulfilling that purpose in every area of life, and sharing that purpose with others. An expert in personal and organizational effectiveness, author JB Symons leads the way with an easy-to-understand, step-by-step process. Each chapter of the book includes a true story from JB’s decades of experience, a humorous illustration by popular artist Alexandra Douglass, and workbook exercises for deepening your understanding of yourself. Ideal for transforming both personal life and career, Getting to Why is your guide to life’s most important question.