I have a question. Just how much do you want to be an INFJ? To that extent, you're less likely to be one. I was in your same situation at one time, debating whether I was a J or P. The thing that made me decide on P was the simple fact that I want to be a J. Because I have this desire, I know I'm biased to think I'm a J, no matter how impartial I try to be. The only way to counter that bias is to reject the possibility I'm a J, except in the face of overwhelming evidence. If I were you, that's what I would do also.