Sara Blakely learned to celebrate failure at a young age…

She’s a model example of what Mark calls a “Reluctant Entrepreneur.” The billionaire creator and owner of Spanx—an innovative women’s clothing line—worked her day job for two years while growing a side business in her spare time.

In the one-minute clip below, Blakely shares a dinnertime ritual her father created. It taught her an enduring lesson on success: The only failure is not to try…

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