Maslow’s Hierarchy of needs is a psychological theory proposed by Abraham Maslow in his 1943 paper “A Theory of Human Motivation”. The theory is most commonly portrayed in the shape of a pyramid with the largest, most fundamental levels of human needs at the bottom and with the ultimate need for self-actualization at the top.
This image is one of my favourites. It looks at how" You don't know what you don't know. Then moves into, now you know what you don't know, Then into, you don't why or how you are doing it. Eventually you end in the conscious/competence realm where you can carry out your craft in confidence knowing how and why.