Here are the top 10 lessons learned from Sara’s Blakely’s journey from fax machine saleswoman to entrepreneurial superstar:
9) Don’t worry about the outer “stuff” until the time is right. Sara worked tirelessly from her apartment creating her product, avoiding investing in outside office space or other marketing and business tools until the product had taken off. She didn’t have a formal website until she made it on the Oprah show and needed one. Anything that wasn’t essential to building the product and getting the name out there simply wasn’t a priority.
10) Breaking the mold is a good thing. When Sara began to research undergarments for women and how they’d been made for the last 50 years, she was astonished. From the absurd sizing protocols (only one average waist measure was used on all the products, regardless of the size of the garment), to how products were tested (on manikins not real people), Sara saw that the undergarment industry needed a female perspective – insights from a real woman wearing these items to shape the product development direction so the products were useful, effective, and as comfortable as possible. She broke the mold, and developed a completely new approach to developing women’s undergarments.
Sara’s most important tip:
“Believe in your idea, trust your instincts, and don’t be afraid to fail. It took me two years from the time I had the idea for Spanx until the time I had a product in hand ready to sell into stores. I must have heard the word “no” a thousand times. If you believe in your idea 100%, don’t let anyone stop you! Not being afraid to fail is a key part of the success of Spanx.”
Art With Korb 
