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The first requisite for success is to develop the ability to focus and apply your mental and physical energies to the problem at hand - without growing weary. Because such thinking is often difficult, there seems to be no limit to which some people will go to avoid the effort and labor that is associated with it.

Thomas Edison

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manage system people jurgen appelo

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creative confidence tom kelley david kelley

Creative Confidence
Unleashing the Creative Potential Within Us All
Tom Kelley, David Kelley

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