Despite having no professional training as a psychologist, he has worked with notable clients, including Ernie Els, Thomas Levet, Retief Goosen, Michael Campbell, Pádraig Harrington, Barry Lane, Sergio García and Søren Hansen.
His main interests were Edward de Bono and sports guru Timothy Gallwey, author of The Inner Game of... series.
He then followed the PGA European Tour for three years before signing a contract with his first client, either Ross Drummond[2] or Rolf Muntz.
[5] Over the next few years, Vanstiphout became the sport psychologist for a number of the top professional golf players, including Ernie Els and Retief Goosen.
Ernie Els, Paul McGinley, Darren Clarke, Michael Campbell and David Howell.