Even if you learn something quickly with your conscious mind, you will easily forget it after you stop practicing. That which is learned with the subconscious mind is not easily forgotten. Therefore to learn something with the subconscious mind, requires months and years of training. Just because you were able to do it before, do not assume that you can do it as well the second time. Each time you do something, you must return to your beginner's mind, and give it your best.

40 - Ki Sayings (2003)