I read somewhere that fantasizing about new features, off spins, optimizations, marketing tactics and etc would release enough dopamine that you'd eventually lose interest as the real deal wouldn't do better. I'll see if I can find it.

But what you posted is interesting and seems to be a perfect fit here and my project app/game graveyard. Someone actually said that I'm not building, im playing with borrowed Lego, pretty much sums it up. I think it boils down to analysis paralysis, that's the root cause. Any anxiety, any doubt, lack of focus, and procrastination stems from that. At least arrived at after really digging.