apr
06
2011
Success is getting what you want. Happiness is wanting what you get.
Dave Gardner
When I quote others I do so in order to express my own ideas more clearly.
Michel de Montaigne
Beïnvloeden van gedrag De nieuwe wetenschap om verandering te leidenJoseph Grenny, Kerry Patterson, David Maxfield, Ron McMillan, Al Switzler
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