"Sean Covey" is an United States/American author, motivational speaker, and publishing executive providing business leadership and time management educational tools for organizations and individuals. He is known for writing motivational books for children and teens. His international best-selling book, The 7 Habits of Highly Effective Teens is based on the principles of The Seven Habits of Highly Effective People, which was written by his father, Stephen Covey. His follow-up book, The 7 Habits of Happy Kids, became a New York Times Best Seller list/New York Times Best Seller.

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Make as many friends as you can, but don't build your life on them alone. It's an unstable foundation.

7 Habits of Highly Effective Teenagers.