Growing up with three older brothers and being the youngest and the only girl, my mom always made me tough. She's taught me over the years how to be a strong, independent woman, how to carry yourself in a positive way and anything that my brothers can do, I can do.

When I tell people I'm going to the Olympics, they're like: 'What do you do, track and field? Pole vault? Are you a volleyball player?' No one ever guesses tae kwon do.

I've been training super hard at the Lopez Taekwondo Academy in Houston, which belongs to my brother Jean. For me, I think confidence is the biggest thing; it's all mental. I train with the best of the best, including my brother Steven, a five-time world champion who won Olympic gold medals.

My parents sacrificed so much for all of us. It makes me want to give back to them by being the best I can be.

It is pretty amazing. My parents, who came from Nicaragua to the U.S. - who would have thought that they would have American kids on the Olympic team? I think that's the epitome of the Olympic dream.

You know, me winning two gold medals, going for a third one, that's nice. But being there with Mark and my sister, and my brother being the coach, it's a dream come true. It's going to be awesome.

Growing up with three older brothers and being the youngest and the only girl, my mom always made me tough. She's taught me over the years how to be a strong, independent woman, how to carry yourself in a positive way and anything that my brothers can do, I can do.