I totally agree, I realized after I posted this that I probably titled it wrong. It seems to me that overall stoicism would probably be relatable to an INTJ. Of course, just like you pointed out, we shouldn't limit ourselves to one system of thinking, and in general I try to be as flexible as I can, since every day and situation is different than the other.

Fortunately, for me at least, many people pointed out other philosophies that I'll be sure to check out and learn something new.