This is the 20th anniversary edition of this book. Now, Discover Your Strengths provides you with personalized insight statements unique to your specific types of strengths. More than 20 million people have discovered their strengths. Gallup has continued to dedicate countless hours to developing our strengths science. This is the work of Dr. Donald O. Clifton (father of Strengths-Based Psychology). The book provides you with a comprehensive understanding of yourself, strengths and what makes you unique.