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. His quotes can change your thoughts change your life.