Some nice words from Carl Rogers.

I have come to feel that the only learning which significantly influence behavior is self-discovered, self-appropriated learning.

Such self-discovered learning, truth that has been personally appropriated and assimilated in experience, cannot be directly communicated to another.

This sentiment has personal significance for myself, and is probably the best advice I could think to give someone else wanting to work in my field.

I have the utmost respect for formal education, but in my experience the best lessons are self-taught.