This isn't specifically directed towards ISFP's, but to any other introvert in an extroverted world... or anyone who just has some good information:
I'm an ISFP and I used to test as having extreme introversion. EXTREME! I was horribly shy, uncomfortable and even anxious around people for most of my life. I've gone through a few spurts here and there where I break out of it and meet a lot of people, but normally I'm a bit of a loner.
Recently, things have changed and I've been much more extroverted, much more social, much more talkative and willing to share. I've been meeting new people nearly every day and making loads of new friends. I've become very comfortable with chit chatting with strangers and making friends of them. I used to feel uncomfortable telling stories or even talking in front of more than one to two people at a time, but I've been catching myself doing elaborate and animated stories for people I hardly know.
They say you stay the same "type" at your core... but I'm wondering if perhaps I'm a bit more of an ESFP now. Have my functions switched at all? Is this just how other introverts are that are not shy? Or have I just better balanced out some weaker areas?