" One evening an elder Cherokee told his grandson about a battle that goes on inside all people. He said, “My son, the battle is between two wolves inside us. One is Fear. It carries anxiety, concern, uncertainty, hesitancy, indecision and inaction. The other is Faith. It brings calm, conviction, confidence, enthusiasm, decisiveness, excitement and action.” The grandson thought about it for a moment and then meekly asked his grandfather: “Which wolf wins?” The old Cherokee replied, “The one you feed. "

― Gary Keller , The One Thing: The Surprisingly Simple Truth Behind Extraordinary Results