Whedon told the Sydney Morning Herald that after "Dollhouse" was canceled that he went through "Anger, anger, anger. Anger. Bargaining. Honestly, this year with my career, I've been going, OK, is it over? Are they done with me and is it time for me to start doing really small or make a graceful exit? Because I'm OK. I have my family, I love to write, I'll always write, they can't stop me doing that."

"But maybe I'm not going to get my shot to reach a mass audience," continued Whedon. "But then I got 'The Avengers.' So, clearly, I'm an idiot.”

While Whedon recently spoke about his rewrite for "The First Avenger: Captain America," he also indicated that he is currently hard at work hammering out the script for "The Avengers."

“Right now I'm working on a movie that's got enormous stipulations and is going to be changing and fluid every second," said Whedon. "I've come up with dozens of scenes and lines and exchanges and monologues that I adore that are not going to be in it. But while I'm writing them they feed me, excite me and they ultimately inform the character. It all goes in.”

Although Whedon also described "The Avengers" as the job “I've waited for my whole life,” he also said that if the job fell through that he would "go join my family on the vacation I'm not on and start working on things I've put on hold to do this.”

“I have always felt, my whole life, that everything could be taken away at any second," continued Whedon. "It has actually been a huge problem for me that I know that. I certainly will do everything in my power not to have that happen, everything in my power to make it good. That's my power, that's all I've got. All I can do is make ['The Avengers'] good enough for somebody to see it twice.”

Whedon also spoke fondly of his first experience working for Marvel as the writer of "Astonishing X-Men" with artist John Cassaday and colorist Laura Martin.

"Doing comics was really fun,” related Whedon. “There was one moment when I got an email from the head of Marvel saying, 'Just so we're clear, your team is going to be . . .' and he listed the people I was going to have [working] on it. I looked at the email and had what I refer to as a 'nerdgasm'. I was so happy that it almost frightened me. That was one of the most perfect moments I could have."

What are your thoughts on Whedon's crisis of confidence prior to landing "The Avengers"? Does his enthusiasm for the project make you feel more excited about it? Let us know what you're thinking in the comment section or on Twitter!