Here is the healthy loop of a Type Four:
Healthy loop controlled by Basic Desire:
Need for self-understanding -> examine self -> understand themselves -> Need for self-understanding
In the healthy state, the need for self-understanding induces Type Fours to allow their emotions to surface and examine these emotions in order to understand themselves. (This is probably why I love the Examen so much!) When Fours achieve self-understanding, their need is satisfied and a balance is reached.