You have to understand who you are and figure out a way to communicate it. It might be in a different industry, but it's about what pumps the blood through your veins, what makes you excited, what pushes your buttons. And then discovering the best way to communicate that, no matter how big or small; it's what you stand for, what you believe in, and what reflects who you are.

I've been cheered by thousands, booed by thousands, but nothing feels as bad as the booing inside your own head during those ten minutes before you fall asleep.

If I've learned nothing else, it's that time and practice equal achievement.

It's no accident, I think, that tennis uses the language of life. Advantage, service, fault, break, love, the basic elements of tennis are those of everyday existence, because every match is a life in miniature. Even the structure of tennis, the way the pieces fit inside one another like Russian nesting dolls, mimics the structure of our days. Points become games become sets become tournaments, and it's all so tightly connected that any point can become the turning point. It reminds me of the way seconds become minutes become hours, and any hour can be our finest. Or darkest. It's our choice.

A great coach can lead you to a place where you don't need him any more.

I had moments of my actions and words not reflecting who it is I am - if that defines a punk, then yes, absolutely.

It has meant a lot to me to challenge the best players in the world and to beat them. And it means a lot to me to be out here and fighting for the title and, you know, it hurts not to win it.