I mean, I feel like just a new person completely.

Let me say that the path I did take for a brief period of my life was not of reckless drug use, hurting others, but it was a path of quiet rebellion, of a little experimentation of a darker side of my confusion in a confusing world, lost in the midst of finding my identity.

You have to block everything out and be extremely focused and be relaxed and mellow too.

I mean, obviously, a lot of people know me around the world. Kids know me.

I'm happy with what I've done but it's a challenge to try to win more.

Tennis is what I do and is part of who I am.

I had an instinct before and maybe now I don't have that instinct as much as knowing what to do, what shots to hit, where to place the ball, things like that.