Managing oneself is based on these realities: Workers are likely to outlive organizations, and the knowledge worker has mobility.

Managing oneself is a REVOLUTION in human affairs. It requires new and unprecedented things from the individual, and especially from the knowledge worker. For, in effect, it demands that each knowledge worker think and behave as a chief executive officer. It also requires an almost 180-degree change in the knowledge workers’ thoughts and actions from what most of us still take for granted as the way to think and the way to act.

The shift from manual workers who do as they are being told—either by the task or by the boss—to knowledge workers who have to manage ...

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