I'm definitely not an SP because I don't live in the moment. I romanticise and admire living in the moment but my mind is usually in the clouds, I'm really bad at finding missing objects, I'm absent-minded, physically slow (according to other people-- I don't get it) etc.
I'm not an SJ because I'm... just not. I don't know enough about them as a group to explain why. I'm just not.
I'm not an INTJ because I'm not cold and calculating enough to be an INTJ.
I'm not an ENTJ because I'm not assertive, and the best-fit careers for ENTJs don't resonate with me at all.
I'm not an E because most people say that I'm quiet and calm. I prefer small groups to big groups and even though I love spending time with people, I like to interact in a small, familiar group and usually in a quiet and calm way. Big, extroverted groups easily make me feel awkward and abnormal, like an alien.
I'm not an INTP because I was a shy, cuddly child who clung to parents. I was detached from the outer world, but I wasn't detached from my family. (Somewhere I read that INTP children seem detached, even from their parents.)