At my worst, my sense of self was shot.
Ne would swim rapidly all over the place trying to construct an external reference for my interior (stupid mistake), and forcing me to twist my personal experiences into archetypes that came to interest to Fi. The result is a state of insecurity ... and oh, remember how we're good at embodying different characteristics and causes and values? Yeah, that's gonna bite you hard, you'll look utterly schizophrenic to others. You start trying to ferret out the values out of everything that ever touched you at some point, as if somehow, along the line, you've forgotten your own self-referential and are now trying to reverse-engineer an image of self from memory [why hello to you too, inferior Si. Too bad you hurt like a b****]. Enter sudden (and oh-so innocent) obsession with psychological theory and then you'll try to embody all the possible rationalizations in the world for a) your lack of self b) your present and past behavior - only to realize there is no such perfect abstraction, waiting in the sea of academia to be found by you. Believe me, at the end of the day, having knowledge about your exact levels of personality "agreeableness" or the 7nth level of Piaget's developmental conflicts will do f***-all for you, excuse my Esperanto.
But that's me unhealthy as an adult.
I've heard stories about teen ENFPs avoiding conflict and indulging hardcore into the senses hoping it will all go away. Wasn't my experience, though. I just went into Fi-induced missions.