Son of late veteran action director Veeru Devgan, Ajay entered Bollywood in 1991 with "Phool Aur Kaante". It was a hit, and Ajay's winning streak started there.
"Luckily, I never had to go through struggle in my life. Everything just fell in place. The thing I learnt from my journey is to work hard," Ajay told , adding that he doesn't believe in comparing himself with others, and doesn't look back but "look at today".
"I don't get carried away by success too much or bogged down by failure," said the actor, who is married to Kajol.
How does he detach himself from his stardom?
"I don't think about it. I don't care about it. I don't go out much. I don't show my power. I think both (Kajol and him) don't care about it. We are happy in our space," he said.
Hollywood star Ben Affleck went on record to say that he doesn't want his kids to pay price for his fame. Although Ajay agrees with him, he feels it is not possible in reality.
"I do (agree with him). But can it be possible? I don't know if that can be possible," said the father of two.
Does the constant spotlight on Nysa and Yug bother him?
"It does hinder me. But I think kids are also sensible that if they inherit so many positive things from their parents, there will be some negatives also," explained the 50-year-old.
After 28 years in the industry and having worked in over 100 films, Ajay is known as a star with many talents. He is an actor, director, producer and has even lent his voice for songs. All these things add more power to his star status.
For some fans, Ajay is Bollywood's intense hero who has won two National Awards. For others, he is the ultimate action star Bollywood's Singham. Still others swear by his brand of deadpan comedy underlined by the successful "Golmaal" films.
His choice of films has always been diverse, evidenced over the years by projects as "Vijaypath", "Diljale", "Gangaajal", "Omkara", "Drishyam", "Total Dhamaal", "Dilwale", "Hum Dil De Chuke Sanam", "Company", "Yuva", and the "Golmaal" and "Singham" franchises. He was last seen in the comedy "De De Pyaar De".
"I love to rotate genres, otherwise I will stop enjoying myself. If I keep on doing the same thing again and again," said Ajay, adding that hard work is the only mantra to survive in the industry.
"For the rest, whatever you want or plan, everything fails," he said.
He will next be seen in the period drama "Taanaji: The Unsung Warrior", which also features Kajol, and will bring to screen the story of legendary footballer Syed Abdul Rahim in "Maidaan". Another "Golmaal" film is also said to be in the pipeline.
"I don't plan the future 'ke mujhe yeh karna hai ya yahan paunchna hai'. I just want to keep going at this pace and work all my life," he said.
(Sugandha Rawal can be contacted at sugandha.r@.in)
( With inputs from IANS )