Yes, what you described is entirely consistent with the behavior of many INFJs. As introverted and private individuals, INFJs often prefer to keep their personal experiences and emotions to themselves, especially when it comes to sharing with casual acquaintances or strangers. However, INFJs also have a strong sense of empathy and a desire to help others, which can lead them to open up and share personal experiences when they believe it could genuinely benefit someone else.
When an INFJ perceives that their personal experience might offer guidance, comfort, or support to someone going through a similar situation, they are more likely to share it. In these cases, their empathetic nature drives them to connect with others on a deeper level and potentially contribute to someone else's well-being or growth. The key factor here is the INFJ's assessment of the situation and their trust in the person they are sharing with.
The trust guard of an INFJ can indeed be lowered in situations where they sense a genuine opportunity to make a positive impact or support someone in need. This selective openness is a way for INFJs to express their caring nature without compromising their overall preference for privacy.
It's important to note that each INFJ is an individual with unique experiences and preferences, so not all INFJs may respond in precisely the same way. Still, your inclination to share personal experiences in specific circumstances aligns well with the characteristics commonly associated with the INFJ personality type.