I was mainly thinking of higher level calculus and beyond stuff. By good I meant "do you find it easy to excel in". I would not say I was good at math. In every other subject I was able to get to a point where I felt like I had "mastered" what we were learning. But with math I always felt like I was flying blind. I'd attempt to follow the steps but always felt unsure. I've never been a linear thinker so I was prOne to simple mistakes. I still typically got A's in math but t was a constant headache. The only subject where I felt the need to really work to learn.