The greatest discovery of all time is Posted on March 2, 2017March 2, 2012 by admin “The greatest discovery of all time is that a person can change his future by merely changing his attitude.” — Oprah Winfrey Author: Oprah Winfrey Category: change Tags: change, Oprah Winfrey Spread the love Related posts: A lot of people get impatient with The thing that lies at the foundation Change is inevitable. Change for the better We emphasize that we believe in change