The "Prem Ratan Dhan Payo" actress uploaded a less than a minute video on Instagram, where she urged her fans and followers to share a clip of themselves talking about their fears and how they overcame it.
"Hi everybody, I have a request, I want you to talk about your fear and how you overcame it. Neerja's fear gave her courage. The best videos you put out I will post. It will give other people courage to face their fears," Sonam said in the video.
She captioned the video: "Hi everyone. I often wonder how fear gave Neerja courage. I would love to hear your stories in 15 second Instagram videos."
"The most fascinating and touching stories will be posted by me, so that your stories can inspire other people to overcome their fears. You can be also be #Neerja. Use #fearvsneerja when you post."
"Neerja" is a biopic on Neerja Bhanot, a valiant Indian flight attendant who lost her own life, but saved the lives of passengers during a hijack.
The Ram Madhvani-directorial features Sonam as Neerja, a Pan Am chief purser who was gunned down by terrorists when Flight 73 was hijacked in Karachi in 1986. She saved a number of lives, but lost her own.
The film is set to release on February 19.
