How does someone go about getting to be one of the richest people on the face of the earth? Of course, starting out with a lot of money can make a big difference. For some of the world's ultra-rich -- like the Walton family through Wal-Mart (NYSE: WMT) or the descendants of those that founded Mars candy company -- that's exactly how it happened.

But for many others, what started as a life with either little or modest means has become something else entirely -- mostly through sweat, tears, perseverance, and -- yes -- luck. Among the world's richest people, I went out to find the 10 who had the most, but started with the least -- relatively speaking.

Here, then, are the world's ten richest self-made billionaires.

 

Brian Stoffel owns shares of Amazon.com, Facebook, Google (A shares), and Google (C shares). The Motley Fool recommends Amazon.com, Berkshire Hathaway, Facebook, Google (A shares), and Google (C shares). The Motley Fool owns shares of Amazon.com, Facebook, Google (A shares), Google (C shares), and Oracle. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.