The 52-year-old actor - who has been cast in seven films next year including Ek Main Aur Ek Tu, Priyadarshan's Tezz and Housefull 2 - says he will go behind the camera when he has fulfilled his existing commitments, the Hindustan Times reports.
"I'm not sure what genre it will be, but I have a lot of stories in my head," Irani said. "I'd like to write the script too. The only thing I am sure about is that it will be a believable story with a lot of emotions packed in it.
"I don't intend to make a melodrama, but it will be a movie straight from the heart. I'd like to start it as soon as I can, but I can't sideline my current films."
The Don 2 actor, who once ran a wafer shop in south Mumbai, has completed a decade in Bollywood and is one of the busiest stars in the industry.
"I just love to work and spend time with my family. And that's the reason I don't look at the length of the role, but what it has to offer me," he explained. "Even this year I had multiple releases. Someone actually told me the number was more than any top star's.
"Next year, I'll be shuttling between multiple projects too, but that's the kind of work that gives me a satisfaction."
Irani, who reprises his role as con-man Vardhaan in Don 2, has stated that he would be a part of Don 3 even though the third film in the franchise hasn't been written or even confirmed as yet.
When asked if he could confirm a date for Don 3, the actor said: "We won't take five years to return with another Don chase, for sure. I don't know whether Farhan [Akhtar] will direct the next project or not.
"But in the capacity of a producer and a Don fan, I'm sure he'll push the film and we should be back in theatres in the next two years. And the chase will continue!"
Watch the trailer for Don 2 below: