Jim Parsons recently told the “All Out with Jon Dean” podcast (via People) that he was “miserable” during the height of his long-running TBS sitcom “The Big Bang Theory.”

“I look back now and realize that there were many ways, at some of the best moments of my life, I was miserable,” Parsons said. “I was not happy. I was stressed.”

He added, “I felt that there was so many plates I was supposed to be keeping in the air and that the success and the good things of life that were happening were only due to this overworking… discipline and whatever. Maybe to a degree that was true. I don’t know. I can’t say because that’s how I was.”

Despite the overwhelming success of “The Big Bang Theory,” Parsons said he wouldn’t relive it “for any amount of money.” He went on to acknowledge that the role “is not going away,” but since the show wrapped in 2019, he’s been “changing my relationship to it.”

“It’s evolving, and it gets better all the time. What I feel is better, what I feel is healthier. It’s not something that I think probably anybody, but I was certainly not equipped to, looking back,” Parsons explained.