Usain Bolt: Setting goals is the key to my success

Six-time Olympic Games gold medallist Usain Bolt has told ITV News that the key to his success in continually setting goals in life.

At the launch of his new autobiography 'Faster Than Lightning' in London, the world's fastest man said: "If you want to be the best, or you want to strive for more, you've got to set goals in life."

Read: Usain Bolt to retire after Rio 2016 Olympics

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Bolt reconsiders retirement plan

Six-time Olympic champion Usain Bolt is reconsidering his retirement after the Rio 2016 Olympic Games and says he is likely to compete for a further year after that