I learned the same sort of lessons from my father. He firmly believed in the principles of take your time, "measure twice, cut once" etc.
If he put up a shelf, you could guarantee it would be dead level in all planes. If it was to hold 50 lb. of things, you could pretty much guarantee that a full-grown adult could hang from it without it budging it from the wall.
I endeavor to maintain those high standards that I learned about at an early age.
