Kenneth Hartley Blanchard born May 6, is an American author, business consultant and motivational speaker. His extensive writing career includes over 60 published books, most of which are co-authored books. His most successful book, The One Minute Manager , has sold over 15 million copies and been translated into many languages. Blanchard is also the Chief Spiritual Officer of The Ken Blanchard Companies, [2] an international management training and consulting firm that he and his wife, Marjorie Blanchard, co-founded in in San Diego, California. Blanchard attended New Rochelle High School , and graduated in Ken's writing career includes more than 60 books, and hundreds of keynote speeches.