I know that your MBTI is supposedly something you're born with and that doesn't change except maybe if you're in a very traumatic car crash or something, but honestly I refuse to accept that because there's no good reason to think it's the case.
So this might be controversial.
In any case, having heard stories about many INFP's upbringing, I have a grand suspicion. Growing up under unreasonable expectations, will cause one to retreat inwards (I), gain a higher interest for the malleable abstract (N) than for the concrete which you are constantly denied any authority on whenever you obviously fail the unfair expectations, learn to tip-toe around people (F), and never take anything for granted (P). I'm not saying F is about tip-toeing around people though, for example, but that it's the function one needs to do it well, and which thus develops. Furthermore, self-respect and authonomy is won by sticking to an unbendable principle, or several principles (Fi). This because we 1) do not eventually necessarily trust ourselves either, 2) can eventually use this to feel morally superior to the person or the persons who are, as they are unreasonable, naturally not living up to their own expectations to us either. The alternative to this would of course be to accept that we are, as they make us feel, useless.
It sounds ugly, but please vote on the poll.
Do you feel like you were under the constant pressure of unreasonable expectations while growing up?