MBTI, fluidity of personality

This year has changed me so much. I have become far more selective with the people I am around. I become drained by new people and too many people s lot more. I was curious and took the MBTI test. I tested INFJ. It actually fits who I have become now, way more than a carefree ENFP. I used to fit ENFP very well. I suppose it’s natural to be shaped by your experiences like erosion wears on stones.