In this week's NZ Sporting History, we go behind the scenes to speak to a man who has coached many of our finest teams in mental toughness - and worked out how to find that winning edge. Author of Become Unstoppable, Gilbert Enoka is best known for his time with the All Blacks - he worked with them for 23 years - during which time they won two Rugby World Cups and dominated the Tri Nations and Rugby Championship series'. Now other international teams are calling on his insight - in fact Gilbert joins Jesse fresh from working with the English cricket team in Australia as they attempt to regain the Ashes.