Some of the many organisations who have benefited from his services include: Anglo American, Shell, Nashua, Toyota, Mercedes Benz, Sappi, Standard Bank, ABSA, Sanlam, Southern Life, Liberty Life, The Tongaat-Huletts, Murray & Roberts, Group 5, ERA, Escom, Kohler Flexible Packaging and Q-Data, David has successfully worked with people from 102 countries and received invitations from across 5 continents. In America, David presented at the same world congress as the world's top-earning speaker, Anthony J. Robbins, David is consistently rated as "absolutely outstanding", "unique", "extraordinary", "the best". He has been featured on television, radio and in the printed media and his latest book Power to You, is now available.