Why Spanx's Sara Blakely kept billion-dollar idea secret

With $5,000 she saved selling fax machines door to door, and no background in design, business or manufacturing, Sara Blakely founded shapewear company Spanx. "Believe you can do it, and you will," she wrote on LinkedIn. "Protect your dreams, ideas and goals."
With $5,000 she saved selling fax machines door to door, and no background in design, business or manufacturing, Sara Blakely founded shapewear company Spanx. Believe you can do it, and you will, she wrote on LinkedIn. Protect your dreams, ideas and goals.

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