My focus in 2010 was on just running fast races. My focus in 2011 was for winning at the World Championships. This year has been a combination of the two so we'll see what kind of time it brings.
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.
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.