I ask this question of the concours crowd in all seriousness. There is no right answer, but I'm curious to see how individuals deal with the problem.
You all know when tackling an restoration, you want to do the very best job you can. Before starting, you always envision how it will turn out: absolutely perfect, of course! This includes anything from a single part to the whole enchilada. Now then...you start the work, and when you're done, it isn't quite perfect enough to your satisfaction. Do you start all over, or accept the flaws due to your inability to perform to your highest expections, craftsmanship, or perhaps the part itself? How do you make the decision that what you've done is good enough, or not good enough? Do you or can you ever achieve perfection? If not, how do you decide that what you've restored or refurbished is "good enough" and now you can move on to other things?
Obviously, some of you have high standards and can achieve them. Some of you also have high standards, but perhaps you don't have the right skills to do so, and hire others to do them. But...there are always flaws! So...how do you go about making the decision that you can live with what you have? Is it time? Money? Other things? How do you deal with not reaching absolute perfection?
For me, I wanted to restore Midlife to about 90% concours level, knowing it would never be judged at the highest level. As I learned restoration skills, I found I can't paint worth a damn, no matter how hard I try. On the otherhand, metal working skills (forming compound curves from flat metal and welding/grinding so that one doesn't need mud), and sheet-metal fitting/alignment came naturally. Not trying to be absolutely perfect allowed a more relaxed set of "good enough" criteria for me to satisfy. That was my decision level, and I basically decided to live with what I could accomplish by myself. So how do you make that decision that it's "good enough"?