Ok, so this did it for me.
INFJs’ Auxiliary Function: Extraverted Feeling (Fe)
INFJs use Extraverted Feeling (Fe) as their auxiliary function. As the most interpersonal of all the functions, Fe is attuned to surveying and improving interpersonal feelings and morale. Like other FJ types, INFJs work to cultivate “good feelings” in the interpersonal environment. In order to survey others’ feelings, Fe contributes to INFJs’ ability to read emotional expressions and body language. This, in combination with their Se and Ni, allow them to effectively read, understand, and relate to others.
Interestingly, INFJs can have a more difficult time with perceiving and understanding their own emotions. This is due to the fact that their Feeling function is directed outwardly (i.e., extraverted) rather than inwardly. Unlike INFPs, whose Feeling function is introverted (Fi), INFJs are less equipped to manage their emotions independently. Inwardly, they deal in the currency of Intuition (Ni) and Thinking (Ti). Hence, when INFJs find themselves in emotionally taxing circumstances, they often turn to others for aid and support.
Fe also entails an extraversion of judgment. INFJs utilize their Fe to express their thoughts, feelings, opinions, and grievances. Fe gives voice and shape to INFJs’ feelings and intuitions. In many cases, INFJs do not fully understand the nature of an Ni insight until given the opportunity to verbalize it. They may have a hunch or a gut feeling, but the content of the intuition can remain somewhat nebulous until it is expressed via their Fe. Assuming they have not been severely censored in their upbringing, INFJs are generally happy to share their feelings and perspectives. In fact, given the right opportunity, INFJs will often talk at length about their feelings and intuitions. Unlike FP types, who generally prefer a more dialogical format, INFJs are inclined toward monologues, which allow them to fully flesh out their ideas on a certain topic.
INFJs’ Fe can present differently among strangers than it does with their intimates. In larger groups, INFJs may seem consistently cheery as part of their attempt to cultivate good feelings. Many INFJs have a good sense of humor and can be funny and engaging. Enlisting their vivid imaginations and knack for metaphor, they can also make good storytellers. In the company of close confidants, however, INFJs use their Fe to be more open and direct with their grievances. Since some INFJs feel like tortured souls, their commentary may take on a characteristically negative tone. They may seem moody, pessimistic, discontented, or restless. They can also seem fairly intense in their communication when infused with the emotion of Fe. Consequently, their expressions can seem exaggerated, dramatic, or irrational, especially to Thinking types. They differ in this respect from INFPs, who are less disposed to melodrama in their verbiage. INFJs can also be susceptible to self-pity and self-loathing, seeing themselves as victims. They may curse the fact that life isn’t fair, feeling that they always end up with the short end of the stick.
For INFJs, expressing themselves through their Fe is critical to their psychological and physical health and well-being. Even if doing so does not provide them with immediate solutions to the problem at hand, they tend to feel better once they have expressed their feelings, whether through words or tears. This is especially important for the mates or friends of INFJs to recognize. While not necessarily looking for others to solve their problems, INFJs value emotional support, empathy, and reassurance. Without such an outlet, INFJs can begin to feel isolated and depressed, turning to their inner fantasy world as a means of escape. And while fantasizing may seem helpful in the short-term, it can make the real world seem even less tolerable and exacerbate existing frustrations toward life.
Even if not to the same extent as EFJs, INFJs can be warm, welcoming, loyal, giving, and self-sacrificing. At the same time, as Introverts, they need time to themselves to recharge their proverbial batteries. This creates an ongoing, even lifelong, struggle for INFJs, trying to balance their own needs and desires with those of others.
INFJs commonly experience a conflict in values between their Ni and Fe. For example, they may be asked by a friend or relative to donate to a cause they don’t believe in. This puts them in the difficult position of deciding between honoring their own perspectives (Ni) or maintaining the harmony of the relationship (Fe). Since INFJs can have difficulty saying no, they will often opt to oblige others, even while inwardly regretting doing so. INFJs may experience similar issues in school. INFJs are disposed to questioning the veracity of what the teacher or other students are saying, not to mention issues of character. At the same time, however, they want to please the teacher and maintain external harmony. This can leave them feeling torn between allegiance to truth (Ni) versus Fe people-pleasing.
Because of the strength of their Fe, INFJs need to be careful not to abandon their Ni in the face of outward pressures. Since Ni is their best and most reliable compass for navigating life, when they lose track of it, INFJs can easily feel lost, restless, and frustrated. Hence, when it comes to decision-making, INFJs are wise to listen primarily to their own inner voice.
from personalityjunkie.com/the-infj/