As a music teacher I often focus on the technical side of playing. And this is important. There is a right way to practice and a wrong way. But why practice? What are we getting at? What is the need we have? The challenge of just executing difficult maneuvers with our hands is not necessarily music. I think aspiring musicians (myself) would do well to ask what they are really trying to achieve with practice. What do the notes of the song say to you?
As musicians we can improve our music by discovering more about the expression. Can you say more with less? Perhaps if we always consider what our music expresses we can improve our practice and interpretation of the music.