Math, because I've always had a head for logical subjects like it, and I really enjoy solving problems
Programming, for similar reasons, I had a lot of fun playing with code
English, or at least the learning the language part of it. I've since continued learning it on my own through a lot of writing and reading, but it's the only language-based subject that I properly enjoyed and mastered.
Art, I love being artistic, whether it's drawing, painting, sculpting, crafting. I love doing creative stuff