I'm sure there are many people from humble beginnings that have biographies. However, they often grew up in different times. There might be some takeaways from their story, but I don't think you can reverse engineer their success path. On the other side of that, I like the quote often attributed to Thomas Jefferson, "The harder I work, the more luck I have." Combine that with "Luck Is What Happens When Preparation Meets Opportunity," and I think we are on our way to something.