I just finished teaching one of my students. She consistently impresses me with her persistence in understanding and pushing through difficult concepts. If there is a complicated part of a piece, or I tell her that there is something to fix, it may take a little more time than usual, but she always figures it out. She never acts like it's frustrating either. She's just happy to be learning.
A couple of years ago, when I was teaching in California, I asked her if she was excited for summer. She said, "No, I'm going to miss school." I think that should always be our attitude about learning. It is a wonderful opportunity, and we can do so much more if we love learning.