Paul, I’m guessing it’s too late to think in a process-oriented way about the project you’re contemplating?
Also, you didn’t explicitly mention perfectionism, but I take it that’s a big part of what you’re talking about? I used to think my perfectionism was a wonderful thing that kept me on point in my projects… but now I realize it’s cost me as much as it has given me. (I can see now where I’ve driven myself and my collaborators crazy on occasion and I’m not convinced that the extra emotional overhead made the end product any better.)
Anyway, I thought this was useful and pithy: Ideas are cheap, work is hard, discouragement is an easy out. A good thought for the day.