When I was young I was very much the social butterfly. I'd talk to people on the street, I'd ask them questions, I'd just generally enjoy their company. I was always out playing with my friends and there was never a time when I'd get exhausted from being around people. I mean, I did cherish my alone time, but I never wanted it out of necessity. It's just something I enjoyed. I liked both being alone AND being with people.
Now fast forward to 19 years old, and I can't go a day without having at least an hour of alone time. I still enjoy being with people, but I find it difficult to convey my ideas and thoughts coherently like I used to. I ramble, I get flustered, I hate being called on. I'd rather write out an explanation then talk it out to a group of people. I'd rather stay at home and read a book then go to a party. All the tests I take come out "INFP".
But I used to be ENFP. I even remember taking a bunch of tests at 12 and having them all come out "ENFP".
So what gives? How can someone transform from an extrovert to an introvert? What happened between 12 and 19 to make me this way? I thought this was all innate personality- something that couldn't be changed. Has anyone else ever had this? Felt like they were both Extroverted and Introverted? Or that they changed?