This post is from the blog Serenity's Journal:
Native Americans have a story of a grandfather walking with his grandson.
The boy asks why there is hatred, evil, violence, and broken promises in the world. The grandfather replies, "The answer lies within. Deep inside each of us is a fight between two wolves. One is evil: He is anger, envy, sorrow, regret, greed, arrogance, self-pity, guilt. The other wolf is good: He is joy, peace, love, hope, serenity, humility, kindness, generosity, truth, compassion, and faith. This fight between the two wolves is going on inside of you and inside everybody."
The grandson thinks for a moment and then asks his grandfather, "Which wolf will win?"
The old Cherokee simply replied, "The one that you feed."