This is taken from Harvey Mackay's book, "The Mackay MBA of Selling in the Real World". It's a great book. If you do any sort of sales, you should buy it, read it, and then give it to a friend or prospect.
A Native American grandfather was talking about how he felt to his grandson. "I feel as if I have two wolves fighting in my heart," he said. "One wolf is the vengeful, angry, violent one. The other wolf is the loving, compassionate one."
The grandson asked him, "Which wolf will win the fight in your heart?"
The grandfather answered, "The one I feed."