India, July 19 -- For millions of fans, Jim Parsons will always be Sheldon Cooper - the brilliant physicist with a love for science, comic books and the iconic "Bazinga!" But while The Big Bang Theory made him one of television's biggest stars, Parsons has now revealed that life behind the scenes wasn't nearly as perfect as it looked.

Looking back at the show's incredible 12-season run, the actor admitted that even during some of the biggest moments of his career, he was quietly struggling. Speaking on the All Out with Jon Dean podcast, Parsons confessed, "I look back now and realize that there were many ways, at some of the best moments of my life, I was miserable. I was not happy. I was stressed."

Jim Parsons Says Success Came At A Co...