I was ready in 2008 for the Olympic Games but unfortunately I missed the Kenyan trials with a thigh injury. I watched those Olympics but it was tough to watch. But it was good in the end because a Kenyan, Wilfred Bungei, was the champion.

Sometimes when you get disappointment it makes you stronger.

Races always are good to show where you are reaching in your training as well as to keep you sharpened. Every race, in my program, I put it in a special way like a ladder, climbing up slowly and slowly to the next one. I see where my training is, and that is like a test.

My father's encouragement is what has brought me this far, because when I grew up I wanted to be like him, and I knew I had that ability to become an athlete. Being an Olympian is one of the greatest things, and being an Olympic gold medallist is one of the most prestigious titles in the world.

The Olympics is a special event and winning is very important. For me as a world record holder and world champion, the only thing I am missing is the Olympic gold medal and that is what I want to achieve in my career.

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.

Fantastic, I am very happy to be the fastest 800 metres runner in the world.