AceShowbiz -

Jennifer Lawrence admits her busy schedule in Hollywood takes its toll on her physically. During a press conference for "The Hunger Games: Mockingjay, Part 2" in Los Angeles on Saturday, October 31, the blonde beauty revealed that she's now aging because of her hectic life.

"I try to keep working so people can see other characters and other things I can do instead of taking vacation time, and now I'm aging like a president," Jennifer told the reporters at the press conference. However, she admitted she would feel empty if she got nothing to do. "I hate waking up without a goal or going to sleep without achieving nothing," she said.

Of her character in "The Hunger Games" trilogy, Jennifer said, "I remember there have been a few times where I would have loved time off but I was very aware of how overwhelming these movies and this character was, and that was a big fear of mine signing on to these movies."

Nevertheless, the Oscar-winning actress wants people to see different characters in every movie she plays. "I want people to be able to lose themselves when they're watching a movie and not see the same character," Jennifer said.

Jennifer said that her work ethic was to avoid going "crazy" in addition to helping her adapt to her new life as one of the most prominent actresses. "Your entire world changes," she said of becoming famous. "Now it's very easy for me because I'm isolated. I have a new normal now. I feel very stable, and normal, and happy, but it took a few years to get used to being looked at differently. It's kind of an alienating feeling."

Jennifer said of the first time she gained her fame, "You don't feel different but everyone reacts to you differently. It was a few years of getting used to it. Then it was 'O.K., let's get back to work' and people react and can do whatever they want. That's fine and it's on them. I have a job. That's how I think of it."

The final installment of "The Hunger Games" movie series also stars Liam Hemsworth, Sam Claflin, Josh Hutcherson, Donald Sutherland, Elizabeth Banks, Woody Harrelson, Stanley Tucci and Jena Malone. It is scheduled to hit U.S. theaters on November 20.