"For me, the feeling that my hard work has been appreciated is priceless as I go by my instinct while choosing a script. When I hear a script, I react as an audience," he said.

It is very difficult to define the potential of any film.

"I did 'Taare Zameen Par' because I loved the story. I had no idea that it would do the business that it eventually did, Aamir said while celebrating 'Ghajini's' success as it grossed Rs 200-crore worldwide.

"When I was offered the film, I was sceptic and felt that Salman or Akshay with a well-built could do better. But, it was Surya, the lead actor in the Tamil version, who convinced me that only I could do justice to the role. That is how I got the confidence to go ahead," said the actor.

Aamir admitted that 'Ghajini's' success had put him under pressure to deliver the same in his forthcoming movies. "Success is not in my hands. I can only follow my heart and work with all the sincerity and hard work that I always do. I would be happy if my next film '3 Idiots' breaks all 'Ghajini' records."

Specially toiling hard for the eight-pack abs for 'Ghajini', Aamir said it had been a "testing time" for him during his one year of training.

"I had to stretch myself to a limit. Losing the physique is also equally strenuous. I have to sport a lean-look for '3 Idiots' and I am now in the process of losing weight," he added.

"Ghajini had a pan-India potential and was marketed well. Also, audiences had not seen a good action film for a long time", he said.

According to Aamir, late Sunil Dutt had inspired him to take his job as a challenge and with determination as he was always ready to risk his life for the sake of a good shot. "This has inspired me to choose the most unusual films," he said.

On his dream project of bringing the epic 'Mahabharata' on the silver screen, Aamir said it required massive preparations, research and commitment.

"I would love to do it. But not in immediate future.

Karna is an ideal role to play, but I do not fit in the role due to my physical appearance. I think I can do Krishna's role," a witty Aamir said.

On his dream project of bringing the epic 'Mahabharata' on the silver screen, Aamir said it required massive preparations, research and commitment.