Filmmaker Karan Johar says behind every good actor there is a broken heart, otherwise it is difficult to perform the way they do on screen. Johar says without a personal heartbreak, it is impossible to bring out emotions on celluloid.

"I think actors who haven't had broken hearts don't perform the way they should. I feel if you are a good actor you must have had a broken heart. It's not possible otherwise for you to depict a certain kind of emotion on celluloid," Johar said at a panel discussion here last night.