10 Entrepreneurs Who Hit It Big After The Age of 30

J.K. Rowling

Once a single mother on welfare, J.K. Rowling finally landed on a winning idea to write about when she came up with the world of Harry Potter at the age of 33. These days, the author is worth more than $15 billion.

Ariana Huffington

While Huffington was relatively successful as an author and political commentator, she didn’t hit it big as an entrepreneur until her mid 50’s. Ariana started the website, the Huffington Post. At age 61 she sold the site to AOL for $300 million.