steve jobs leadership dealing with crisis crucibles john mackey ken frazier nelson mandela bill george authentic leaders big client big risk seller problem solver sales story the power of the pitch sales weapons sales data base sales segmentation type of sales manager why buyers buy sales plan mike weinberg new sales simplified sales walter isaacksn generation 1955 paul allen steve wozniak berners lee bill gates vision talent idea innovators broken window theory- content is a king the stickiness factor the law of few tipping point content marketing success sport boxing muhammad ali roy keane alex ferguson leaders josé mourinho david beckham cristiano ronaldo arsen wenger zlatan ibrahimovic
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