It has been a fantastic journey. I have gone to five Games, broke the Olympics record in 2004 in Athens and won a gold medal as well in Beijing. I have had a good run at the Olympics.
Women's combat sports have been on a good run in the United States. Claressa Shields won a gold medal in women's boxing at the London Olympics in 2012, when it became a medal sport. American women won medals in taekwondo and judo as well.
Fear is there. Anything can happen at an Olympics. I want to use the experience I gained from Athens and Beijing - the fear, too - and build a me that can't lose. I will do everything to make sure I win a third gold medal in London. That target drives me. I'm bulking up and have more power now. I'll be fighting fit to take the gold back home.
Because winning a gold medal had been a dream of mine since a young age, I needed to empty my mind during the preparation for the Olympics by telling myself that it would be OK not to win a gold medal.
The Olympics are every four years and I think every athlete who competes in the Olympics wants the gold medal, and I think that's what the World Cup is for a rugby player - it's the gold medal.
I always look back to my first Olympic medal in 2004 in Athens. I was very new to the sport, and it was my first big win at the Olympics.
Up until Beijing where I had my greatest victory, I had trained for 16 years of life with a singular goal and singular obsession that I wanted to win gold medal at the Olympics.
If I had to pick one exact moment when we were live on air and something very, very special happened it was at the Athens Olympics. Chris Hoy won the Gold Medal in the kilometre time trial and that was incredible.
I was still young when I missed Beijing. I was favourite to win a medal but I knew I had time. My coach advised me to stay at school and finish my exams. Even if I had gone and won the Olympics, I might not have handled the pressure. So I moved on.
Playing college soccer was going to be the top of my athletic feats. I wasn't going to the Olympics. I was a decent player, but it's because of hard work, not because I was Freddy Adu. I wouldn't have a medal from the Olympics if I wasn't in a chair. I wouldn't have gone to the Olympics and experienced the whole atmosphere.
Gold slipped from my hand at the Rome Olympics and then from P.T. Usha at the Los Angeles Olympics. But it is my dream to see a boy or girl from India winning gold in the Olympics before my death.
Looking back, I'm so proud to have gone to five Olympics - I believe only three other Americans have achieved that. My true gold medal, though, is my daughter, Karsen, who is 18 months old. And I have a wonderful husband, Mike.
It's an Olympic Games, at the end of the day, and to represent your country at the Olympics is about as good as it gets. Put a gold medal on top of that, and it doesn't ever get any better.
The Olympics is not for tennis and tennis does not need the Olympics. It is not my goal in life to win a gold medal.
The Olympics brought a lot of development to Beijing, but I don't see that there have been any changes to human rights as a result of the Olympics.
Your goal is to win a medal at the Olympics. The players who go into their second Olympics like me, know the agony of missing out on a medal.
It's the Olympics. And it was a long way for me. To compete at the Olympic Games, I dreamed of any medal, but frankly speaking, I wanted a gold one.