A couple of Steve Earle quotes....
"Is what I'm doing worth my audience's time? 'Cause that's who you're working for."
"The best advice I can give any performer is: Audiences don't know what monitors are and they don't f***ing care. And you don't pay to get in, it doesn't matter what it sounds like to you."
From the Bigsound 2012 conference in keynote talk in Brisbane, Australia
The process of coming to a conclusion is vastly more important than the conclusion itself.