Award-winning director David O. Russell's latest movie "Joy" is about a woman finding happiness in life despite everyday obstacles.
But the word might also be used to sum up Russell's relationship with Jennifer Lawrence, the actress he calls his muse, who has starred in his last three movies.
Russell, who directed Lawrence in her 2012 Oscar-winning role as a young widow in "Silver Linings Playbook" and in 2014's "American Hustle," said that as an actress and a person, she inspires him to take risks with filmmaking.
"She wants to go to places that are scary . . .