Making a film that I'm disappointed with is a blessing to me

I have yet to make something that I'd really call a "bad" film, but there are a few that didn't leave that much of an impression and I'm not really interested in watching again.

However, when that happens, the first thing that comes to my mind isn't "Damn, I'm such a failure", but rather "Yesss! This is my chance to prove myself again". With the bar now lowered, and having learned from my mistakes in the process, the only way left to go is upward.