Today, people at work rely more on their knowledge than skill. Knowledge and skill differ in that skills tend to change slowly whereas knowledge changes faster and quickly obsoletes itself. Therefore, a knowledge worker quickly becomes obsolete if he/she does not strive to learn and reinvent himself/herself.
The test is to ask yourself if you are confident that whatever knowledge and skill you have accumulated up until today be enough to carry you over the next 50 years of your working life. Finding a new supply of energy only goes so far and you are not growing younger each day. You have to make something different out of yourself.
Tags: peter drucker