Aged just 19, Janja Garnbret is already one of the most dominant athletes in the World. She's got a far better winning percentage than Serena Williams, Tiger Woods or Michael Schumacher, and she's only just getting started. Perhaps even more impressive than her results is her attitude - she's humble, motivated and keen to improve; traits she's going to need if she wants to become the first climber to win an Olympic gold medal.