Dutch motivational speaker and trainer, born 11 March 1949 in Arnhem, Netherlands. Started out as owner of a series of french fries bakeries in Arnhem. Was one of the first to get The Netherlands acqainted with Neuro Linguistic Programming (NLP). Became a national celebrity in the '90s with many appearances on tv and in the press, very regularly repeating his victorious motivational motto/mantra "Tsjakkaa!".