Actor Jason Segel Explains Why Successful People Never Really Feel Successful

By Alyson Shontell

Jason Segel is an accomplished actor who has starred in smash hits ranging from "Forgetting Sarah Marshall" to "How I Met Your Mother."

To most people, he's a success. But Segel says he doesn't always feel like one.

Segel's latest role is a serious one. He plays an author who spends five days being interviewed by a journalist (Jesse Eisenberg) in an upcoming film, "The End of the Tour."