To put what you know about something out of your mind and listen to a new explanation, a new insight. If you are asked your experience or opinion, then by all means share it. Otherwise hold what you know in abeyance so that you can benefit from this new learning opportunity. All your natural talent, your eagerness and hard work, your willingness to pay the price to master a skill, all of this amounts to little or nothing if you do not have an attitude that enables you to be taught. Most of the great instructors I have seen deal with the un-teachable student in much the same way.
Most competent teachers encourage students to ask questions.
Asking questions is not the same as questioning the validity of an answer. Once you have experienced it, you will accept the validity of your teacher explanations. Asking questions often helps the good teacher teach. It tells him what you do not understand, it shows how you think about things, and it gives the teacher some insight into how you learn. It also evokes the answer.