Can someone answer this? What is the lesson that you learned in the story of the two wolves?

THE STORY OF THE TWO WOLVES

The following is an old Cherokee Indian story that is enlightening and helpful. 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 us all." "It is a terrible fight and it is between two wolves. One is evil - he is anger, envy, sorrow, regret, greed, arrogance, self-pity, guilt, resentment, inferiority, lies, false pride, superiority, and ego." He continued, "The other is good - he is joy, peace, love, hope, serenity, humility, kindness, benevolence, empathy, generosity, truth, compassion, and faith. The same fight is going on inside you - and inside every other person, too." The grandson thought about it for a minute and then asked his grandfather, "Which wolf will win?" The old Cherokee simply replied, "The one you feed"