Here's a list of inspirational quotes, wisdom and perspective, from all around the net...

TWO WOLVES  
One evening a Cherokee grandfather told his grandson about a battle that goes on inside people. He said, "My son, the battle is between two wolves inside us all. 
"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 wins?"
The Cherokee grandfather simply replied, "The one you feed." 

Deepak Chopra on Gratitude: 
http://www.youtube.com/watch?v=TIXIwdhOmSM