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Omdenken (6)

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Happiness doesn't depend on any external conditions, it is governed by our mental attitude.

Dale Carnegie

Laatst aangepast op dinsdag, 15 november 2011 20:31  

Whom the gods want to destroy, they send 30 years of success. In the midst of your success, the seeds of failure are sown, and the signals are often very subtle.

Peter Drucker 

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