The 7 Habits of Highly Effective People," published in 1989 by Stephen R. Covey, is one of the most influential self-help and personal development books ever written. With over 40 million copies sold in 40 languages, its principles have helped shape the way people approach both their personal and professional lives. The book's enduring success lies in its principle-centered approach that focuses on universal, timeless concepts rather than quick-fix solutions.