Not an artist but definitely an ADHD person.
To define ADHD in short, it is all about burning out.
I get stuck in thoughts and pursuits that thought with all I got and it makes me burnout and unable to remember where I was and what I’m supposed to do. I get upset when people telling me I’m on the wrong track of things because that thought I’m stuck in is the most important thought in the world and I can’t understand why the rest of the world can’t see that.
Then I have to use all my energy to re-track myself to focus on stuff that the world wants me to focus on and it burns me out.
Thing is, when I burn out, I can’t pick myself up and I blindly stumble over everything I do. This is normal for everyone, we can’t work properly when exhausted. Problem is, I burn out multiple times a day, and can’t focus. And when I find my focus, I get stuck in that thought and burn out again.
Getting a diagnose and medication has helped a lot! Because to address a problem, is to know the problem.
I’m sorry to hear that your financials haven’t been able to get your knowledge of your troubles, but if you can get it, I will only recommend doing so. Whatever you might or might not have a diagnosis, knowing is important.
Getting A’s in school, could be your ADHD focus and is a wonderful gift, the question is, are you also able to function in the day-to-day tasks?
Getting the crazy Webtoon weekly 40+ panels, is an ungrateful task for everyone, so in that regard don't feel bad about getting exhausted when thinking about it. I personally think we should stand up and change that standard, but when the competition is that hard as it is, then standards will always be harder.
I wish you all the best and I hope you get to know yourself better one day.