Science shows most high achievers had troubled childhoods

Elon Musk's sister just explained why he's the perfect example. Tosca Musk, sister of the Tesla and SpaceX founder, opens up about their challenging childhood. Could this be the reason for the multi-billionaire's success? Jessica Stillman reflects on how a classic study of 400 high achievers found that an incredible 75 per cent had experienced a difficult childhood and considers whether reliance is an important aspect of success.