I often ask people how they stop themselves from feeling or understanding something. The implied message is that it is already there and we have to do something not to get it.
Learning the change the body is important.
Learning to change the mind is crucial.
How do we stop ourselves from changing our frame of reference to a higher level?
I am afraid not everybody is able to recognise the effort it takes to really progress. You must be in constant wonder about what, how, when and why. A proper teacher will get you going and have you find the way (to progress). First obstacle: does a newby know this? not likely, how could he? How can a newby judge the capabilities of his teacher? Over time you will hopefully be able to judge and
decide whether or not you need to change (teachers).
Herein lies the danger: the student himself is responsible for this; to stay critical. In a sense you need to become your own critic (and a sharp one at that). In all honesty, not everybody is capable of doing that. Again it takes a good teacher to 'shove' you along and willing student to pick up on that push.
So how do we stop changing our frame of reference?
The slope start to slide when you think you know something for a fact (and forget that 'fact' is related to your current frame of reference).
Going through the motions in class...
without isolating a single aspect you want to change....
That one time you accept mistakes from yourself, or others...
That moment you think it was good enough...
In the end it is more important to find out how to keep going? Sho shin. beginners mind. Train like you know nothing. Always. Do not ever think you know. Never.
The WTF moments mentioned above should not occur. You should be able to recognise what is shown, smile and in the best case already know why you are not yet capable of doing that.
Your teacher has simply presented you a problem to work on. Wonder why he choose that specific technique.
Observation is key. Learn to 'read' the body movements of your teacher. Understand them and make them your own. Start to teach. This requires you to explain your movements, your intent within the technique, direction. It demands you to observe your students, identify their problems and find a way to help them progress.
This constant cycle in the end is what makes you progress.
It is a martial discipline