thinking and doing

Zen calendar quote today: "We never do anything well till we cease to think about the manner of doing it." I disagree. I get the Zen point, but in practical terms, isn't it precisely the opposite? I understand getting lost in the full reality of something. Well, I don't "understand" that, but I admit the validity of the viewpoint, the total immersion of lived experience. And yet, think of ballet classes, batting coaches, pitching coaches, mechanics, tutors, writing teachers, et cetera ad infinitum. speaking of Latin, here's where "age quod agis" comes into play: "do what you are doing."