After film critic Gene Siskel asked her, "What do you know for sure?" Oprah Winfrey began writing the "What I Know For Sure" column in O, The Oprah Magazine. Saying that the question offered her a way to take "...

Everyone has a purpose. And, according to Oprah Winfrey, "Your real job in life is to figure out as soon as possible what that is, who you are meant to be, and begin to honor your calling in the best way possible." That jour...