I've been to three Olympics and I don't feel I've ever quite achieved my best at any of them.

The biggest danger is trying to put too much pressure on yourself, trying to get in too good shape.

You see, with me, when I'm nervous, I smile and laugh.

I used to say that the newspapers were tomorrow's fish and chip paper, but I didn't really mean it; I could still be hurt by what they said. After Athens, I just didn't care.

At big championships it's not the fastest person, it's the person who gets it right on the day.

I have achieved a lot and I'm grateful for that - I'm just a bit greedy because I want to add the Olympics. It's once every four years - everyone wants it and very few people get it.

For an athlete, the biggest pressure comes from within. You know what you want to do and what you're capable of.