First I believe it is extremely difficult to teach these skills and more to teach them "right". Because you can only teach by showing how you do it, so it totally depends on the teacher's experience (i.e. it is a "double" luck question -- the student needs to be lucky to get a teacher to teach these skills, and lucky to get a right teacher).
In addition the student has to learn the skills when they are still young, otherwise it's not going to make any significant impact. Sure you can learn the skills in the 40s but then it's going to be a lot easier and impactful if you figure them out when you are 10 (trust me I saw those people).
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I'd like to elaborate on the points.
First I believe it is extremely difficult to teach these skills and more to teach them "right". Because you can only teach by showing how you do it, so it totally depends on the teacher's experience (i.e. it is a "double" luck question -- the student needs to be lucky to get a teacher to teach these skills, and lucky to get a right teacher).
In addition the student has to learn the skills when they are still young, otherwise it's not going to make any significant impact. Sure you can learn the skills in the 40s but then it's going to be a lot easier and impactful if you figure them out when you are 10 (trust me I saw those people).
So eventually it's a triple-luck question.