The Keirsey test is wonderful! I took the test online at the Kiersey Temperament Sorter and it was a revelation of sorts. I was designated to be an INFJ. The description for an INFJ discribed me extremely accurately. In fact, it was able to describe aspects of my personality that I had never been able to put into words. It put many of my motivations and behaviors into perspective. I recommend that others take this test by clicking on the link above. You'll learn a little about yourself. I did. Below are my results.
The Counselor Idealists are abstract thought and speech, cooperative in reaching their goals, and directive and introverted in their interpersonal roles. Counselors focus on human potentials, think in terms of ethical values, and come easily to decisions. The small number of this type (little more than 2 percent) is regrettable, since INFJs have an unusually strong desire to contribute to the welfare of others and genuinely enjoy helping their companions. Although INFJs tend to be private, sensitive people, and are not generally visible leaders, they nevertheless work quite intensely with those close to them, quietly exerting their influence behind the scenes with their families, friends, and colleagues. This type has great depth of personality; they are themselves complicated, and can understand and deal with complex issues and people.
Counselors can be hard to get to know. They have an unusually rich inner life, but they are reserved and tend not to share their reactions except with those they trust. With their loved ones, certainly, INFJs are not reluctant to express their feelings, their face lighting up with the positive emotions, but darkening like a thunderhead with the negative. Indeed, because of their strong ability to take into themselves the feelings of others, INFJs can be hurt rather easily by those around them, which, perhaps, is one reason why they tend to be private people, mutely withdrawing from human contact. At the same time, friends who have known an INFJ for years may find sides emerging which come as a surprise. Not that they are inconsistent; INFJs value their integrity a great deal, but they have intricately woven, mysterious personalities which sometimes puzzle even them.
Counselors have strong empathic abilities and can become aware of another's emotions or intentions-good or evil-even before that person is conscious of them. This "mind-reading" can take the form of feeling the hidden distress or illnesses of others to an extent which is difficult for other types to comprehend. Even INFJs can seldom tell how they came to penetrate others' feelings so keenly. Such supernormal intuition is found frequently in the INFJ, and can extend to people, things, and often events.