Some years ago Dr. Billy Graham was a guest on Oprah. I will never forget his answer to her question, “What are you most thankful for?” He said, “Salvation given to us in Jesus Christ . . . and the way you have made people all over this country aware of the power of being grateful.” I loved that he took advantage of the platform to share the core of the gospel message, but also that he honored Oprah for making a difference in the culture by stressing gratitude the way she has. Millions of people have discovered the power of keeping a gratitude journal because of Oprah’s testimony of…