Interesting Change Model
I found this in a non-lean book, but I can see how this applies to our lean world, this change model:
The first step in improvement is understanding how you stand, how good are you, how lean are you? When understand you CAN improve, that's “conscious incompetence.” Then, as you improve and try new things comes “conscious competence.” You're better, but having to think about the new practices all the time. Then comes the final phase, “unconscious competence” where those formerly new practices are now a way of life. I guess when lean becomes “a way of life” rather than that “new program”, you've reached a good place.