Some of that is ADHD but some of it is non supportive parents. I never doubted my intelligence, or self worth. I did suck at homework and do good on tests.

Edit: tldr for the rest I no like homework and am competitive.

I failed algebra and could do most of it in my head because I just couldn't be bothered to spend the time to do the homework. I had to retake the second semester again and was sitting at 32% after a quarter, I had passing out good grades in every test but did zero homework. In order to avoid a third time I did all my homework the last quarter got at least an A if not 100% on every test and quiz and had 2nd highest grade which was over 100% it of all my teachers classes. Brought my grade up to a D + by the numbers but teacher gave me a B+.

I much preferred college math where my grade was only tests. My ex gf from highschool who later married my best friend happened to be in all my undergrad math classes. I did bad on my first trig quiz when i went back to college at 26. She talked shit to me so I got a study buddy and she never beat me on another test for trig, calculous 1 or 2.

My study partner bless his heart busted his ass for those classes and got B's. I browsed Reddit in class and studied for an hour or 2 with him and was top 3 in the class.

I was terrible at proofs in discrete math though.

And for anybody that actually read this I'm sorry for my ramblings.