I've been followed home late at night. I've been shot at on the highway.

To have been selected to represent Team South Africa at the London 2012 Olympic Games in the individual 400m and the 4x400m relay is a real honor and I am so pleased that years of hard work, determination and sacrifice have all come together.

Out of the tens of thousands of prosthetic legs they've made, there's never been any 400-meter athletes run under 50 seconds. So, if this was such a technologically advanced prosthetic leg, then how come not everyone's qualifying, or coming close to the qualification time, then?

Thank you to everyone that has made me the athlete I am! God, family and friends, my competitors and supporters! You have all had a hand!

It's impossible to make everyone happy. Some will choose to see the negative. None is perfect but find a way of loving them perfectly!

I want to wake up every day and feel that I'm training harder than my competitors, that I'm dieting harder, that I'm recovering better. That's what gives me confidence when I'm lining up on the blocks. I've never gone out to prove people wrong. I just want to be the best that I can possibly be.

I am also hugely excited to then be competing to defend my three Paralympic titles at the Paralympic Games. I believe we will see some amazing times posted and I am very much looking forward to what will be an incredible Olympics and Paralympics in London.