Lester Cohen / WireImage.com 1 / 10
Lester Cohen / WireImage.com 1 / 10

Kristen Bell has six movies slated for release in 2012, but the 31-year-old actress is still saving for a rainy day.

VIDEO: Kristen Bell flirts with fiance Dax Shepard

"I always assume my career's going to end tomorrow, you know what I mean?" the "House of Lies" star, who's been engaged to Dax Shepard since 2009, tells the new issue of Flaunt. "We're very frugal."

Bell adds that they're "hillbillies at heart, and I'm not f------ ashamed of that."

PHOTOS: Kristen and other stars' TV comebacks

Bell -- who next appears alongside Drew Barrymore and John Krasinski in "Big Miracle" --  says her life with Shepard, 37, improved once she finally realized it's OK to make mistakes.

PHOTO: Kristen and other stars go burlesque

"I think perfection is unrealistic and unattainable, and I felt freed when I let myself be who I am," Bell tells Flaunt. " Like, I'm gonna order red velvet pancakes. Life is f------ short and these are delicious."