Jennifer Lawrence has been working non-stop since the first installment of The Hunger Games came out in 2012, racking up over 12 films since the release of the blockbuster movie.And, even though she thinks her busy schedule is taking its toll on her physically, she wouldn’t want it any other way.“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,” Lawrence, 25, told reporters at a press conference for The Hunger Games: Mockingjay – Part 2 in Los Angeles on Saturday. “I hate waking up without a goal or going to sleep without achieving nothing.”With films including the X-Men franchise, American Hustle and her Oscar-winning turn in Silver Linings Playbook under her belt, the Kentucky native has purposely worked hard to show people what she can do beyond Katniss Everdeen, even though she calls the tribute “the greatest female character ever”.“I remember there have been a few times where I would have loved time off,” she said. “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.”