Hungry Wolves

A friend sent me the following story:

One evening an old Cherokee told his grandson about a battle that goes on inside people. He said, "My son, the battle is between two 'wolves' inside of us all. One is Evil. It is...
anger, resentment, self-pity, envy, jealousy, regret, greed, arrogance, inferiority, lies, false pride, superiority, and ego.
The other is Good. It is...joy, peace, love, serenity, humility, kindness, benevolence, empathy, generosity, truth, compassion and faith." The grandson thought about it for a minute and then asked his grandfather, 'Which wolf wins?'
The old Cherokee simply replied...
'THE ONE YOU FEED.'