A colleague of mine just made a business presentation. It was average. How is it that people stay unprepared? You need to be prepared all the time. This is a great competitive advantage. Just like a great musician may be called to perform suddenly and she gives a brilliant performance, similarly in every walk of life one needs to be prepared-always prepared. A student for a test, a doctor for a surgery, a business man for a presentation, a pilot for a take off, a soldier for a combat, an employee for a promotion, --- the list can go on and on.
The difference between mediocrity and excellence is preparedness, because when you are called to perform you have no time for anything else.