I do know a lot about Scientology. And I know about the practices. I know all about what the technology is and all that kind of stuff. It's very helpful.

[Having perosonal trainer for the movie 'The back-up plan'] I felt like I had just given birth. He was like, "You can't eat anything but this. You've got to do what I say." So along with doing the film, I did this kind of disciplined workout regimen, because every cheese farmer is ripped and buff, and I wanted to be true to character, because I'm Method. But it took a lot of hard work to get there. You can rest assured in the fact that it's all gone now.

We had our moment [with Marc Anthony] in the third or fourth year that we were married, when we did everything together: We did "El Cantante," we did the tour, we made all the music together, he produced my album [2007's Spanish-language "Como Ama una Mujer"]. That was a really beautiful time for us.

My hair and makeup people and stylists have changed over the years, but they all know sometimes I want to do Marilyn, and on another day I want to do Jackie O. Though sometimes I look back and have to say, "Wow! What were we thinking there?"

I remember when I was 33 or 34, it was devastating because I realized I wasn't a kid anymore. The great thing about 40 was that I really felt like I had life experience and knew what I was doing now.

I know that being seen as a role model means taking responsibility for all my actions. I am human, and of course, sometimes I make mistakes. But I promise that when I fall, I get back up.

All of a sudden one day I was like, I'm good at this! Oh, man! People are not giving me jobs because they feel sorry for me! I am an actress. I am a singer. I am a performer. That's what I do! Once I started giving myself a little credit, the whole world opened up.