The 33-year-old actor, who has starred with Aamir Khan in Rang de Basanti and 3 Idiots, is making his debut as a solo lead in the film Ferrari Ki Sawaari.
In an interview with the Hindustan Times, Joshi said he was not concerned about living up to people's expectations.
"I don't care. The audience has the choice not to care and likewise do I. I do my work with complete faith and belief. There are several parts I have played over the years and it's very important for me to enjoy what I do.
"This is my first film as a solo lead and I am extremely proud of it. I am sure the audience will like it and appreciate that such a film has been made in our country, thanks to Vidhu Vinod Chopra and Rajesh Mapuskar."
Sharman admitted he had to do 30 to 40 auditions for the film before he landed the role.
"The fact that I loved the script and that I wanted to work with Vidhu Vinod Chopra productions, where I knew that quality would be ensured, made me work hard for it. I feel privileged to work in the film. 30 to 40 auditions is not a big deal," he said.
The film, which also stars Vidya Balan, features Joshi as a middle-class man striving to fulfil his son's dreams.
The 3 Idiots star added that his next film will see him in an entirely different incarnation.
"I am here for the long haul, for at least 30 to 40 years, and I want to do films in various genres. Common man is how you see me right now, next you'll see me in a different avatar."
Ferrari Ki Sawaari releases on June 15.