Don't let doing enough be good enough.
Unlimited efforts can produce unlimited results.
You can't stop change. Don't let it stop you.
Listen to customers and you will hear them. Look carefully at customers and you will see them. Do both and you will understand them.
Are you doing only what you must or doing all you can?
When things go wrong, your best recovery effort is required. But don't just provide the missing piece (that's the recovery), also provide uniquely personal assistance (that's the memorable effort).