Here is the passage that have had the greatest impact on me that I learned from Peter Drucker about Excellence
One should waste as little effort as possible on improving areas of low competence.
It takes far more energy and work to improve from incompetence to mediocrity than it takes to improve from first-rate performance to excellence.
And yet most people especially most teachers and most organizations concentrate on making incompetent performers into mediocre ones.
Energy, resources, and time should go instead into making a competent person into a star performer.
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