Athletes have to be confident and I am thinking like that.
If you're planning only to make money and nothing else, you'll be broke.
What is important is to win.
I think if you come first with a new world record, that is the best.
My father thought sport was something fun - he didn't know it was a way to make money. Then I won a Mercedes at the world championships and I gave it to him. From the moment it arrived my father said: 'Good, you can support not just yourself but me too'.
If I don't train enough, of course I'm nervous.