When I was in grade school and we had to write papers about what we wanted to be when we grew up, I wanted to be a social worker or a missionary or a teacher. Then I got involved with tennis, and everything was just me, me, me. I was totally selfish and thought about myself and nobody else, because if you let up for one minute, someone was going to come along and beat you. I really wouldn't let anyone or any slice of happiness enter.... I didn't like the characteristics that it took to become a champion.