“THE WORLD AS WE HAVE CREATED IT IS A PROCESS OF OUR THINKING. IT CANNOT BE CHANGED WITHOUT CHANGING OUR THINKING.”

Earl Nightingale co-founder of Nightingale Conant, the world's largest publisher of Personal Development Authors. He was an American radio speaker and author, dealing mostly with the subjects of human character development, motivation, and meaningful existence. He was the voice during the early 1950s of Sky King, the hero of a radio adventure series. Later, his radio program Our Changing World was featured on over 1,000 radio stations for 30 plus years. Nightingale was the author of The Strangest Secret, the first spoken word record to sell over a million copies. Hundreds of his five-minute radio programs and selected segments have been compiled into the 21 hour audio program narrated by Joe Nuckols, The Secret Advantage.

Denis Waitley an American motivational speaker, writer and consultant was the first author in addition to Earl Nightingale to be published by Nightingale Conant. He has been recognized as the best-selling author of the audio series, The Psychology of Winning and books such as "Seeds of Greatness" and "The Winner's Edge". He has been inducted into the International Speakers' Hall of Fame for Personal Development Authors.

Les Brown As one of the world’s most renowned motivational speakers, Les Brown is a dynamic personality and highly-sought-after resource in business and professional circles for Fortune 500 CEOs, small business owners, non-profit and community leaders from all sectors of society looking to expand opportunity. Les Brown is committed to motivating and training today’s generation to be achievers and leaders as he introduces new audiences every day to It’s Not Over Until You Win, Up Thoughts for Down Times and Fight For Your Dream. Les Brown’s audio series, “Choosing Your Future,” remains his all-time bestseller for its acclaimed impact worldwide.

Khalil Gibran was a Lebanese-American writer, poet and visual artist, also considered a philosopher although he himself rejected the title. He is best known as the author of The Prophet, which was first published in the United States in 1923 and has since become one of the best-selling books of all time, having been translated into more than 100 languages. Audio version narrated by Joe Nuckols as part of Nightingale Conant's Personal Development Authors.

Brian Tracy a Canadian American motivational public speaker and self-development author. He is the author of over eighty books that have been translated into dozens of languages.  His popular books are Earn What You're Really Worth, Eat That Frog!,  No Excuses! The Power of Self-Discipline and The Psychology of Achievement.  

Wayne Dyer an American self-help author and a motivational speaker. Early in his career, he worked as a high school guidance counselor, and went on to run a successful private therapy practice. He became a popular professor of counselor education at St. John's University, where he was approached by a literary agent to put his ideas into book form. The result was his first book, Your Erroneous Zones (1976), one of the best-selling books of all time, with an estimated 100 million copies sold to date. This launched Dyer's career as a motivational speaker and self-help author, during which he published 20 more best-selling books. By the 1990s, the focus of his work had shifted to spirituality. Inspired by New Thought he promoted themes such as the "power of intention," collaborated with alternative medicine advocate Deepak Chopra on a number of projects.

Carl Jung was a Swiss psychiatrist and psychoanalyst who founded analytical psychology. Jung's work has been influential in the fields of psychiatry, anthropology, archaeology, literature, philosophy, psychology, and religious studies. Among the central concepts of analytical psychology is individuation—the lifelong psychological process of differentiation of the self out of everyone’s conscious and unconscious elements. Jung considered it to be the main task of human development. He created some of the best-known psychological concepts, including synchronicity, archetypal phenomena, the collective unconscious, and extraversion and introversion. Jung was also an artist, craftsman, builder, and a prolific writer. Many of his works were not published until after his death and some are still awaiting publication.

José Silva an American self-taught parapsychologist and author of the "Silva Method" and the "Silva UltraMind ESP System", intended to help people increase their  IQ, develop psychic skills, and to develop the ability to heal both themselves and others remotely, using forces unknown to science. Silva wrote a book, You the Healer, on how to use the Silva Mind Control Method to heal yourself and others. He also started the Ecumenical Society of Psychorientology Inc. to protect users from allegations of practicing medicine without a license. A New York Times article on April 16, 1972 ("Can Man Control His Mind") reported that a Trinity University study showed that students trained in Mind Control did attain a high degree of Alpha level production. 

Maxwell Maltz an American cosmetic surgeon and author of Psycho-Cybernetics (1960), which was a system of ideas that he claimed could improve one's self-image leading to a more successful and fulfilling life. He wrote several books, among which Psycho-Cybernetics was a long-time bestseller — influencing many subsequent self-help teachers.  His orientation towards a system of ideas that would provide self-help is considered the forerunner of the now popular self-help books.  Joe Nuckols has narrated several Maxwell Maltz books.