Relationships are give-and-take, and when you're a tennis player, you're certainly not giving. You have to be self-absorbed. It has to be about you.
My first U.S. Open I think was just very special for me because that was sort of the beginning of what was a 'Cinderella' story for me.
I've had a lot of fear in my life, from fear of flying to fear of making a speech in front of a lot of people.
To be a tennis champion, you have to be inflexible. You have to be stubborn. You have to be arrogant. You have to be selfish and self-absorbed. Kind of tunnel vision almost.