Models are useful tools that helps understand our self and the growth process. Learning is a critical part of the growth process and I have always referred to the Shu-Ha-Ri concept as a model that help me with mapping out where i was along the process. It is a a very simple but POWERFUL concept and i am hope you find this useful as much as I have. Shu: In this phase, the apprentice follow the rules that have been taught and rarely deviate from the rules.