Focus not on who you are, but on what you can do for others.
Crossing barriers can be as simple as a smile.
Instead of just asking 'How did I do?' ask 'How can I do more?'
Your approval gives others the confidence to serve, to learn, to try.
Always do what you can do instead of worrying about what you can't.
The bottom line is a by-product of taking care of your main product - your customers.