How do sport's greatest stay at the top?

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LeBron James will play in a record breaking 23rd NBA season, while Mohamed Salah has just helped Egypt qualify for another Fifa World Cup. Lee James, John Bennett and Louisa Thomas of The New Yorker discuss what motivates the likes of James, Salah and Serena Williams to keep winning, even when there's nothing left to win. We hear from the Egypt and Liverpool striker off the back of another record breaking season with his club that saw him crowned men's PFA Player Of The Year. We also hear from Mahmood Fayez, a friend of Salah's and a former assistant coach with Egypt. He says the 33 year old is as driven now to succeed as he was as a young player.