The most important single ingredient in the formula of success is knowing how to get along with people.
Theodore Roosevelt
juni
25
2017
The most important single ingredient in the formula of success is knowing how to get along with people.
Theodore Roosevelt
Concentration is the key to economic results. No other principles of effectiveness is violated as constantly today as the basic principle of concentration Peter Drucker |
De kracht van het piramideprincipe Bij Bol.com of Managementboek |