I grew up in a house where my father encouraged my brother and me to fail. I specifically remember coming home and saying, 'Dad, Dad, I tried out for this or that and I was horrible,' and he would high-five me and say, 'Way to go.'

My dad encouraged us to fail. Growing up, he would ask us what we failed at that week. If we didn't have something, he would be disappointed. It changed my mindset at an early age that failure is not the outcome, failure is not trying. Don't be afraid to fail.

My training of cold-calling and everyone under the sun telling me no, and my keeping going, was a huge part of the first two years of Spanx.

I was trying to convince all these men to try to make a product that they didn't even wear! Or if they did wear them, they were not admitting it! There was the problem right there. No wonder their hosiery was so uncomfortable.