I took an online Myers Personality Test and got INTJ, twice. I'm not sure I'm this though.?

The main thing I don't agree with is the confidence in academics and organization. The organization looks disorganized but I can find anything I need to, given the time. The confidence in academics isn't so much me doubting myself its just I don't go into a class saying "Hell yeah imma ace this *****". Is INTJ my actual personality type?