How do you develop a mental process?

From People Types and Tiger Stripes, written by Gordon Lawrence and published by CAPT.

By using it purposefully to achieve something you think is important. A good example comes from the use of sensing. Development of sensing provides a direct and keen awareness of physical realities and excellent powers of observation. If you are sitting on a train, watching the scenery go by, you are using your sensing but not particularly developing it. If you are driving yourself around a strange city, you will probably concentrate your sensing to notice and remember landmarks — this process develops your sensing. Of course, this kind of focus and effort requires both perception and judgment, the dominant helping the auxiliary to develop, and vice versa.