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Home Omdenken Omdenken volgens Brian Tracey
Omdenken volgens Brian Tracey

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Our mind is the most valuable possession that we have. The quality of our lives is, and will be, a reflection of how well we develop, train, and utilize this precious gift.

Brian Tracy

Laatst aangepast op woensdag, 23 juli 2014 19:14  

He who knows others is wise. He who knows himself is enlightened.

Lao Tzu

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