Yeah my wife tells me I always get things right....the second time around(she is my second wife). At one time this was true of my construction projects. Now I go with materials that are as maintanence free as I can get. Sometimes I still get it wrong though. If my age has taught me anything it is to do it right the first time with the right stuff. I have projects inside that are on the second go round' but this time hopefully the last.
I am 50 now so I doubt I'm that much older than you. You might be 60 but that isn't much of a hop from where I am now. Seems to go faster with time.
I do find myself planning more than doing but it seems to help. When I was 20 I went off doing and thinking more with my little head if you know what I mean.