The “What I Know for Sure” feature by Oprah Winfrey first appeared in O, The Oprah Magazine in 1996. She has become the sole black billionaire in America during the past 14 years, retired from The Oprah Winfrey Show, started her own television network, and been awarded the Presidential Medal of Freedom. Her articles provide a unique and compelling window into the mind of one of the most extraordinary women in the world.