I changed the way I work a couple of months ago to follow this advice, it made a big difference and my productivity went up by miles.

@kenney

make a mockup

management decides it is good enough
now mockup is in production and never touched again

@Joe_von_Saporski

I can't tell you how often this happened to me. I learned pretty quickly not to show my work until I was absolutely forced to. And when that finally happened, which it always did, I made sure to plaster warnings ("test system" or "WIP - output not verified" or "demo only") all over it and all its output. That still didn't stop them from trying to put unvetted systems that were still a WIP into production but at least I could say 'I told you so' later.

@kenney