Being an outsider in Bollywood, actress Taapsee Pannu says she is very careful in selecting her roles as she is aware that one wrong move can get her out of work.

The 28-year-old actress, who already has a successful career down south, feels the pressure of delivering hits in Bollywood all the more because of the cut-throat competition.

"There is a lot of stress when I select films. I can't go wrong. I can't go with even one per cent of doubt that the film might not work. I have to be absolutely sure about the film I am doing. That's why I take longer to sign movies. It's easy to get offers but it's important to choose the right one," Pannu told PTI during a visit here.

The actress made her Bollywood debut with David Dhawan's 2013 comedy "Chashme Baddoor" followed by Akshay Kumar-starrer "Baby", where she had a small but effective role.

The actress says her career in south has helped her deal with the pressure that comes with being in Bollywood.

"I still get sleepless nights. That feeling of waiting for box office result is like a school report card, it never goes. The stress is there because if you give one failure, they will kick you out. It's extremely competitive and the competition is brutal."

When asked whether star kids have it easier compared to the outsiders, Pannu says, "They (star kids) have easier way to start. But for us, that start itself is a little difficult. We have to prove ourselves film after film to reach a stable level then it becomes auto pilot. But before that we can't afford a single failure."

The actress will be next seen in Shoojit Sircar's production "Pink" alongside megastar Amitabh Bachchan. The film will hit theatres on September 16.