Kristen Stewart
Kristen Stewart REUTERS

Kristen Stewart admitted that she is rather unhappy during a candid interview in the November issue of Marie Claire UK.

“I'm a miserable [expletive]! I'm not sure if I'm most happy when I'm comfortable and content or when I'm pushing myself to the limits,” Stewart said.

Stewart is possibly miserable due to the relationship problems she had to publicly deal with over the summer after cheating on Robert Pattinson with her “Snow White and the Huntsman” director Rupert Sanders.

“There are such different versions of happy. And I really appreciate both,” the actress went on to say.

Stewart also revealed that she would return to school if she were not an actress.

“I'd probably go back to school, read a lot and figure out what I should do,” Stewart said.

Stewart certainly pushed herself to the limits recently though, in her lastest film, “On the Road.” She bares it all in the movie, with her first ever nude scenes. But the actress says she did not get nervous preparing for the scenes.

“It didn't bother me,” Stewart told MTV News at last month's Toronto International Film Festival.

“You can do no wrong with [director Walter Salles]. He puts so much inside of you. In the four-week rehearsal process, it was okay to ask any question, to bring up any story, to really over-analyze everything and intellectualize everything. Once we got on set, it was about just breathing and letting it happen. He put so much trust in us, so it was like, 'Okay, so I have to take my clothes off?' It's so not a big [deal],” Stewart added.