That makes sense. He really loves music theory, I know that. But I'm a textbook enneagram 5 and I don't much like discussing it because it's something I really like as well, but don't pick up on as quickly as he does.
I was surprised. He doesn't care about school much and has always dressed "alternatively" (dyed hair, dark clothes), he likes weird music, is rather disdainful towards teachers, is indecisive, doesn't really have a plan for his future, etc. I never even considered ISTJ. Like I said in my thread, I thought eventually he'd open up and we could have those kinds of conversations. We are similar in many ways, so I jumped the gun and assumed I understood him really well (such as instances where we "disconnect." Not from each other but the external world). I miscalculated and it was foolish to assume I could categorize him like that, but it was still strange, you know?
Also, what do you guys base your self-worth on? What indicates to you that you are doing well in life?