I have to confess that I'm in a constant state of evolution in terms of the way I feel about it. When I was doing early pieces, I wasn't exactly in love with the idea of building the stuff. I could do it because I had the skills, but I really did it because I couldn't find anyone else to build it for me.
You should be convinced of the authenticity of what you have, but you must also be humble enough to say that we dont know everything. And since we dont know everything, we must accept that another person may believe something else.