Park Shin-hye is beloved among local and international fans for her wholesome and vivacious image but the actress says it is not always fun and games in the entertainment business.
In a recent interview with local media, she said that she barely slept while shooting a movie or a drama, worrying about how it will be received.
"I may look like I float graciously like a swan on a lake, but I'm kicking as hard as I can below the surface. ... I think it's the same for every (actor)," she said.
Park added that she does have ups and downs in her life, but she has generally been happy with her career.
She will star in the upcoming flick "Heart Blackened." The film is about a business tycoon struggling to clear his daughter of murder, with the victim being his singer fiance.
Park plays the daughter's lawyer, Choi Hee-jung.