The self-made millionaire
1: "I had a rough upbringing, but when you work hard and you make sacrifices, you can succeed." Floyd Mayweather Jr. brought himself from the bottom to the top in the boxing world. 49 fights, 49 wins - an ace in the ring, and outside, a marketing genius. At 38, the world champion from the US collected 276 million euros ($302 million) to lead the sporting world in earnings.