The epistolary drama, which revolved around a lonely wife, who connects with a soon-to-retire government employee via letters in a tiffin box, was a breakout role for Nimrat.
She immediately went on to star in international TV show 'Homeland'.
"'Lunchbox' was a tough act to follow. A film like that happens to people maybe once. I was left wondering what I am going to do next. It's a very classic problem and it happens to people who break into the industry with something that significant. I did face that," Nimrat told PTI in an interview.
"But I hope I am not afraid of that success in my life because I know I don't let any kind of success go to my head. Yes, it is a little daunting to figure out but luckily for me 'Homeland' and 'Airlift' came at a very interesting time. It has been fulfilling in diverse ways."
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Nimrat is currently playing the role of Rebecca in the second season of Fox's "Wayward Pines", which has been executive produced by M Night Shyamalan.
The 34-year-old actress feels it is a really interesting time to be an actor in India as there are more opportunities than ever before.
"Life has a way of bringing forth what I should be doing next in that particular time of my life. It is a great time to be working as an actor in India. The opportunities I have in India like doing 'Airlift' with Akshay Kumar, it would not have been possible a few years ago."
Nimrat says the only thing that she is careful about while choosing a particular role is to avoid falling into cliches.
"I only connect with a project if I want to watch it. It has always been a deciding factor for me. I won't be a part of something that I can't watch. Also, I would not want to do something to repeat myself... It is easy to fall into cliches."