03/06/2006 AT 09:00 AM EST
Macaulay Culkin isn't quite sure where he belongs, or if he belongs at all.
"I don't know what people want from me," the onetime Home Alone star tells Time magazine in a new interview.
Culkin, 25, has had a difficult time parlaying his childhood success into an adult acting career. The young actor, who left the profession at age 14 only to return in 2001, added, "I'm the most out-of-work actor I know."
Culkin, who looks much as he did as a child, said he's ready to appear onscreen anytime. "Acting found me. I thought maybe I should try to find it again."
But the role that Culkin is best-known for these days is his friendship with Michael Jackson. The actor was called to testify on the singer's behalf last year in Jackson's child-molestation trial.
Culkin said that he doesn't often talk to the reclusive pop star. "He's … the kind of friend you talk to twice a year," he said.
With Culkin's time off-screen, the actor has been free to pursue other interests, including a semiautobiographical novel due to hit stores next week.
Junior, which one critic called "self-indulgently infantile," has been described as a stream-of-consciousness work, and is reportedly an experimental form that includes quizzes, journal entries, lists and more.
Culkin, however, makes no apologies for the book – or himself. "I've led a very isolated existence since I was 6 years old," he said. "It's kind of been me and my mind. I hope people don't think I'm crazy, because I'm not."