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Home Persoonlijke effectiviteit Grootste zelfoverwinning volgens Harry Truman
Grootste zelfoverwinning volgens Harry Truman

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In reading the lives of great men, I found that the first victory they won was over themselves... selfdiscipline with all of them came first.

Harry Truman

Laatst aangepast op woensdag, 11 november 2015 08:04  

Whenever anything is being accomplished, it is being done, I have learned, by a monomaniac with a mission.

Peter Drucker

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