Casting is an integral part of the film's process and he says it is "actually one of the most demanding processes, in terms of trying to get appointments, to get time".
"In the whole film industry, all the producers and all the directors have to do 'jugaad' for casting. Nothing can happen without that," the 39-year-old told reporters Wednesday at the launch of the song "Karle jugaad" from his upcoming co-production "Fukrey".
In fact, for his directorial debut "Dil Chahta Hai", he had pulled a casting coup with names like Aamir Khan, Saif Ali Khan, Akshaye Khanna and Preity Zinta featuring in it.
Casting for the 2001 blockbuster buddy film had been toughest, says Farhan as "I had to wait for long in my life for casting of 'Dil Chahta Hai'".
The film was a runaway hit at the box office and also won a National Award. Farhan became a name to reckon with after its success.
On being asked about the film for which he got the fastest casting, Farhan said: "The fastest ever I have managed to cast anybody for the film I directed was for 'Don'."
"Don" came out in 2006 and featured Shah Rukh Khan, Priyanka Chopra, Arjun Rampal, Boman Irani and Om Puri.
Meanwhile, Farhan has roped in young actors, who are one or two films old, for "Fukrey". Pulkit Samrat, Manjot Singh, Varun Sharma, Ali Faisal, Richa Chadda, Vishakha Singh and Priya Anand figure in the film.
"Fukrey" hits theatres June 14 and the filmmaker is hopeful the casting will be advantegous for the movie.
Photos: Katrina Kaif, Shamita Shetty at Mumbai airport
Photos: Varun Dhawan, Alia Bhatt promote 'Badri...' on 'Dil Hai Hindustani'
In pictures: 15 facts about kissing that will surprise you
Photos: Shahid Kapoor and Mira Rajput at cafe in Bandra
Photos: Deepika Padukone, Neha Dhupia and Soha Ali Khan at event