Brad Pit has credited his new film for changing his outlook in life.

The Curious Case of Benjamin Button tells the story of a man who is born eighty-years-old and lives his life in reverse. And the actor, who is up for best actor for his performance as the title character, admits that the role made him confront his own mortality.

He said, "I walked away realising that time is short. I don't know if I have a day or 10 days or 10 years or 40 years. Am I halfway or am I close to the end?

"I don't know, so I have to make sure I don't waste those moments in any kind of pettiness or bitterness or laziness, and that I surround myself with the people who are most important to me."