"Another factor is the education and culture in which you grow up. I didn't grow up in the culture of victory, where you are expected to be or have to be, the best. It was not at all like that in my family. Tennis was really a hobby. If it led to something, great. If not, there were other things in life. I think that was something I was missing at some points in my career, because when I see Hingis or the Williamses, you see how they were educated for this: to win, to be the best, a bit the American mentality. Number one. Number one. Number one. I didn't have this."