I care just as much about "how you practice" as "what you practice". At a certain point, you should be paying attention to both equally.

For your own practice, I think Dr. Cobb sums it up nicely here, where he describes the delicate balance between putting your head down and working hard and sitting back to reflect on your hard work.

When you think about crafting a training experience for a student or client, you need to think about how you can, in the words of Dr. BJ Fogg, "put hot triggers in the path of motivated people."

On a whole different level, take the advice of Taoist Sage Liu Hung Chieh: "you become what you practice."