Brad Pitt losing enthusiasm

London: Brad Pitt feels he is losing enthusiasm with age and that he felt more optimistic when he was younger. "I was more optimistic and naive when I was younger and I arrived in Los Angeles with a few hundred dollars in my pocket and took any odd job I could find, then worked as an extra before I started to get acting jobs," contactmusic.com quoted the 47-year-old as saying. "I gradually grew more cynical and realistic about the world, and in some ways I`m sorry I lost some of that openness and enthusiasm," he added. However, the actor admits that being a father has helped him regain some of his youthful zest. "Being a father and being part of my own family has rekindled a lot of that lost spirit although I still have a naggingly realistic outlook on things," says the actor, who raises six children with partner Angelina Jolie. IANS