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If you haven't already done so, I would strongly suggest that you become familiar with the story of Sara Blakely, the founder of Spanx. Not because she is said to be the youngest self-made female billionaire ever, but because she seems to epitomize the combined power of hard work, persistence, innovation and humility.
More billionaires showing their benevolence is a business trend we can get behind. Nine new wealthy donors and their families signed on to the Giving Pledge on Tuesday, promising to donate at least half their wealth to charity as part of a non-binding moral contract started by Warren Buffett and Bill and Melinda Gates in 2010.