Managing Oneself (Harvard Business Review Classics)

In a society in which success has become so terribly important, having options will become incresingly vital.

By that time, however, they should know the answer to the three questions: What are my strength? How do i perform? and, What are my values? And then they can and should decide where they belong.

Do not try to change yourself - you are unlikely to succeed. But work hard to improve the way you perform. And try not to take on work you cannot perform or will only perform poorly.