Our deepest fear is not that we are inadequate
Our deepest fear is that we are powerful beyond measure.
It is our light, not our darkness, that most frightens us. 
We ask ourselves, "Who am I to be brilliant, gorgeous, talented and fabulous?"  
Actually, who are you not to be?  You are a child of God; your playing small doesn't serve the world.
(Marianne Williamson, quoted by Nelson Mandella in his inaugural speech)