I am an INFJ, not an ENFJ. I suppose a theory I tried to ease myself into was that because I liked other human beings immensely, I was an extrovert. Not so. I get very tired around other people, and I like to be alone if given the choice.
Also, my Myers-Briggs typing of Harry Potter characters was more than likely incorrect as well. As of now (and these opinions may change as I examine characterization further in the future):
Harry Potter - ISFJ
Hermione - ESTJ
Ron - ESTP
Snape - INTJ
Dumbledore - INFJ
Voldemort - INTJ
Luna - INFP
Neville - ISFP
Ginny - ESTP
Fred and George - ENFPs
Lupin - INFJ
Sirius - ISTP
McGonagall - ENTP
Hagrid - ESFJ
Molly - ESFJ
Arthur - ENFP
Again, all these types are probably wrong, but . . . :)
I'm also out of high-school now, so my life is a blank page just waiting to be scribbled on. The question is, which color pen do I want to use?