‘Avatar' actor Sam Worthington says that being a part the blockbuster has changed his life dramatically.

Talking about the current success of his film, Worthington recently said in an interview that Cameron had changed his (Sam's) life forever by giving him a role in the film.

"I was living in car before I signed up for ‘Avatar'. Jim has changed my life. I am extremely proud of being a part of this film and very, very thankful to Jim for giving me this opportunity".

Avatar, which released in theaters last week, has become a huge hit worldwide, making Sam Worthington an overnight star.