Scott Rudin, the powerful producer who was exiled from Broadway and Hollywood four years ago after allegations of bullying led to widespread denunciations and even protesters in the streets, has been quietly preparing to return to show business.

After what he called “a decent amount of therapy,” apologies to many people and a period of reading and reflection holed up on Long Island, Rudin said that he had decided he wanted to make theater again. He is at peace, he said, with the reality that not everyone is likely to welcome him back.

He called his previous behavior, particularly toward subordinates, “bone-headed” and “narcissistic.” He acknowledged that he had long yelled at his assistants (“Yes, of course”) and that he had on occasion thrown things at people (“Very, very rarely”).

“I was just too rough on people,” he said.

But Rudin — who produced films including “No Country for Old Men” and “The Social Network” and Broadway shows including “The Book of Mormon” and “To Kill a Mockingbird” — said he was confident that from now on he would be able to maintain his exacting standards without terrorizing others.

“I have a lot more self-control than I had four years ago,” he said. “I learned I don’t matter that much, and I think that’s very healthy.” Also, he added, “I don’t want to let anybody down. Not just myself. My husband, my family and collaborators.”

Rudin, 66, agreed to discuss his ambitious plans in response to requests to talk about indications that he was planning to return to producing. The result was his first detailed interview about his downfall, his time away from Broadway and his hopes to mount a comeback. His return is likely to be controversial, given that reports of the ways in which he berated and mistreated assistants helped lead to a reconsideration of workplace culture in theater.