Success isn't winning every time. A lot of different factors go into every race, and you can't control all of them. Success means doing as excellent a job as you can on that particular day. The people I admire most aren't necessarily the most wonderful athletes. I admire the ones who keep coming back and doing it, time after time.

The idea of prosthetics is a tool. Most people's cell phones are prosthetics. If you leave your cell phone at home, you feel impacted by not having it. It's an important part of your daily function and what you can do in a day.

The Pentagon isn't a place that champions individuality and innovation.

Life is about making your own happiness - and living by your own rules.

Belief in oneself is incredibly infectious. It generates momentum, the collective force of which far outweighs any kernel of self-doubt that may creep in.

Everyone is really afraid of getting out there and not being good. That's the challenge: To be afraid and know people are staring at you and know you might not do all that well, but you do it anyway. What singles out the successful athlete from the ones who never make it past a plateau, it that successful athletes risk failure, even though they are terrified.

We all bullet point our triumphs, but I am who I am because of everything you don't see on my CV. The stuff that doesn't work out teaches you how to trust your instincts and adapt.