P.S. I have seen some pretty cocky black belts who have decided they know it all
. Although humbling them is pretty easy, it is often a fruitless endeavor since they have stopped learning. I try to get my students to train with the attitude they will learn something every time they step on the mat. I do each and every time, since I have trained myself to expect it. Even if it is a distinction in a technique I had not thought about before.