Story cribbed from http://stone.com/dmt/DMT-NeXT_12.html

fight_of_the_wolves.txt

An elder was teaching his grandchildren about life. He said to them, 
"A fight is going on inside me.. it is a terrible fight and it is 
between two wolves. One wolf represents fear, anger, envy, sorrow, 
regret, greed, arrogance, self-pity, guilt, resentment, inferiority, 
lies, false pride, superiority, and ego.

The other stands for joy, peace, love, hope, sharing, serenity, 
humility, kindness, benevolence, friendship, empathy, generosity, 
truth, compassion, and faith."

"This same fight is going on inside you, and inside every other 
person, too", he added.

The Grandchildren thought about it for a minute and then one child 
asked his grandfather, "But Grandfather, Which wolf will win?"

The old wise man simply replied... "The one you feed."