When you're a famous, successful person at 16 years old, the rules change for you. Everybody is doing things for you to make life easier so you can go out and play. And I think you miss out on lot of...
Even though there are a lot of bright tennis players out there, you still have to protect yourself and save all your mental and emotional energies for tennis.
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.