Having wasted considerable time in detailed planning only to realize different results, I tend to look at things differently now......as opposed to then.
I could relate it to the popular between innings minor league entertainment of having a person bend over and put their forehead on the handle of a bat and turn in circles as quickly as possible numerous times after which they try to run towards a finish line. That "drunken stagger" seems like an illustration of all our human attempts.
Not that all that striving is really wasted. Now, I just have a more realistic expectation. Perhaps it is more important to focus on "now." For instance, right now I am making the perfect pot of coffee.
On your original quote above. I prefer my favorite spiritual advisor's aphorism as a better description of detailed planning:
"I knew I was going to take the wrong train, so I left early"