Jim Parsons has opened up about the personal cost of starring in one of television’s biggest sitcoms.

During an appearance on the All Out with Jon Dean podcast, Parsons reflected on the years when The Big Bang Theory was at the height of its popularity. Although the role of Sheldon Cooper brought him widespread recognition, major awards and financial success, the actor said he was often deeply unhappy behind the scenes.

Parsons explained that he felt constant pressure to keep everything moving and believed the success surrounding him depended on relentless work and discipline. Looking back, he now views much of that behavior as obsessive rather than simply a strong work ethic.

“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 during the interview. He described himself as stressed and admitted that he made the experience harder by putting extreme pressure on himself.

The actor added that he would not put himself through that same experience again for any amount of money. His comments were about the unhealthy lifestyle and emotional pressure surrounding that period, rather than a direct declaration that he would never portray Sheldon again.

Parsons played Sheldon Cooper across all 12 seasons of The Big Bang Theory, which ended in 2019. The performance earned him four Primetime Emmy Awards and made the character one of the most recognizable figures in modern television comedy.

Since the series ended, Parsons has continued working in film, television and theatre while gradually changing the way he views his connection to Sheldon and the fame that came with the role.