Can it happen that a student has the right idea, but then doubts himself and unlearns it, because it was improperly taught?
Can it happen that a student's instinct leads to the right place, he verbalizes it wrong, or doesn't understand the teacher, and then gets caught in an internal conflict by trying to force himself what is wrong - becuase now he believes this wrong is right?
Supposing that what the student did was correct, or what the student was about to do was correct, but that student is misled. The student fights his own impulses that would lead to the correctness, because of the overriding belief that what was taught (wrongly) or misunderstood wrongly and followed, was right. Nothing can germinate as long as that belief is held.
Well, what I realized is that some people do indeed wish to learn, but they do not wish to be taught. Do you suppose there to be an inherent discrepancy between those desires ?
Provided that the teaching is correct and not harmful - i.e. choose your teacher with care. There is a companion thread to this one on "loyalty".