The Oscar-winning actress revealed to Fabulous magazine (via Entertainmentwise) that she took three days to consider whether or not she should take the part or not.
She explained: "It's really rare that saying yes to something will completely change your life. I was happy with my life and I didn't know if I wanted it to change.
"I've always had this imaginary future where I would be a soccer mum that drove a mini-van and my kids would be normal.
"That just didn't fit with taking on a giant franchise. So, I took three days to decide, and each day was a different answer. I finally talked to my mum.
"I'd only really done indie films before that, and she said, 'Every time people ask you why you don't do studio movies, you always say that it's because you don't care about the size of the movie, you care about the story and the character. But you're a hypocrite, because now you have a story and a character that you love, but you're not saying yes to it because of the size of it'."
"So, I said yes," she added.
The Hunger Games was one of 2012's major box office hits, and was the beginning of a four-film series. The next instalment of the series The Hunger Games: Catching Fire will be released on November 22.
Since the release of the original Hunger Games film early last year, Lawrence has gone on to win an Academy Award for her role in Silver Linings Playbook.
She recently began filming her next film with Silver Linings co-star Bradley Cooper and producer David O Russell. It is scheduled to be released in the US on Christmas Day.
Photo gallery - Jennifer Lawrence's career in pictures: