My problem was as someone with Asperger’s, I’d do incredible and do very well in what I was great at in and into but would get bored at what I wasn’t. This is why I think my kid brother is a better student and smarter than I was. He’s able to focus his attention on to fields he may not necessary like e.g. mathematics but able to do so nonetheless. I couldn’t do that. I also was on concerta for the longest time too due to my ADHD.