An Advocate (INFJ) is someone with the Introverted, Intuitive, Feeling, and. INFJ (introverted, intuitive, feeling, and judging) is one of the 16 personality types identified by the Myers-Briggs Type Indicator (MBTI). (INFJ stands for Introvert, iNtuitive, Feeling, Judging and represents individual's preferences in four dimensions characterising personality type, according to. The Myers–Briggs Type Indicator is an introspective self-report questionnaire indicating differing psychological preferences in how people perceive the world and make decisions. You can be both incredibly shy, quiet, and withdrawn, as well as charming, fun, and hilarious.