MBTI is a scientifically proven personality test. INFJ is one of the 16 types.
INFJs are intuitive, caring, quiet and peace-loving: deep and complex people who may seem equally at home dealing with the personal and analytical spheres of life. The interior world of vision and ideas is this type's most comfortable domain, but some degree of human connection is essential for the INFJ's happiness; a potential conflict for this type. Articulate, empathetic and idealistic, INFJs often say they just know things, they know them directly, and they may not be able to tell you how or why! INFJs seem to be able to feel others' feelings vicariously and sense the good and evil in situations: an almost psychic ability which may be an asset in many "people professions."
Spiritual, sensitive and committed, INFJs enjoy being of service to others. Once this type's goals are set and the mind is made up, no argument based solely on reason and practicality is likely to divert the passionate INFJ from a mission or chosen project. Whether this characteristic manifests itself as admirable tenacity or bull-headed stubbornness may determine the individual INFJ's potential for life success.
INFJs are gentle, caring, complex and highly intuitive individuals. Artistic and creative, they live in a world of hidden meanings and possibilities. Only one percent of the population has an INFJ Personality Type, making it the most rare of all the types.