I have a friend who tracks everything and everyone who ever does anything with her trees. She limits herself to a specific number of trees- buys one, sells one, etc. She can take trees back 20+ years. Something to be said for that. I think the key is to work on trees, getting those beautiful, well balanced trees takes work, multiple times over the years. Now some of mine take longer than they should, but that is just the way it is (live 700 miles away from your trees for 5 years...). Yes my wife is a Saint.