Identifying true INFJs amidst those who might misidentify as such often comes down to nuances in behavior and disposition. One notable distinction lies in their comfort with emotional expression. INFJs tend to be reserved, often guarding their vulnerabilities closely, akin to INTJs. Conversely, INFPs are more inclined to wear their emotions on their sleeve, especially around trusted individuals. This contrast stems from the differing dynamics of introverted feeling (Fi) versus extraverted feeling (Fe).

Moreover, some who mistake themselves for INFJs may actually be ISFJs. While similar in some respects, ISFJs exhibit a reluctance towards novelty and unconventional humor, unlike INFJs who are more open-minded and often delight in the peculiar. Additionally, ISFJs excel in hands-on tasks and practical activities, reflecting their superior sensory function (Se), whereas INFJs typically find such endeavors draining due to their inferior Se.

Overall, genuine INFJs often project a demeanor of quiet amiability, paired with a penchant for moral reflection and a structured lifestyle. Yet, beneath this facade lies a creative eccentricity and a penchant for dark humor, traits that emerge upon closer acquaintance. They navigate social circles with ease, yet maintain an air of enigmatic privacy that adds to their allure.