"Two secrets to keep your marriage happy. When you’re wrong, admit it. When you’re right, shut up."  Ogden Nash

One evening an old Cherokee told his grandson about a battle that goes on inside all people.  He said, “My son, the battle is between two wolves that dwell inside each and everyone of us.  One is Evil.  It is anger, envy, jealousy, sorrow, regret, greed, arrogance, self-pity, guilt, resentment, inferiority, lies, false pride, superiority and ego.  The other is Good.  It is joy, peace, love, hope, 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 will win ?”
The old Cherokee simply replied:
“The one you feed.”

I can't find an origin for this, but it can still share a great deal of thought to most any day...I know it does for me!