INTJ is there one specific area are you feel especially strong?

I have always found human behavior an interest for me. I am always pondering and researching different aspect of human behavior, so I feel especially strong in the subjecting. I often connect abstract ideas and human behavior and identify the connections between the two.

However if I don’t find an interest in a subject I really couldn’t care less about diving deeper into a subject.
An example would be how I feel about spelling and grammar. I have always felt they are actually a waste of effort and am very careless with both. I hate school and while I attended my focus was on anything but grades. I failed out of college.

This just doesn’t sound like what I read/watched about INTJ. Can any other INTJ relate?