ADHD isn't considered as being part of the autism spectrum, but it has many similarities. I can be really resilient about things, stick things out, suck it up and deal with it. . .but when I'm pushed past that point, I get really irritable and emotional, to the point I can't even think straight. I pace, I'm agitated, my chest hurts, I feel like I need to cry but I can't, and I can't even put into words how I feel.
I can focus on something that interests me for a long time, I do well in a routine but when I get bored, I find ways to change it up to keep it interesting. That's gotten me in trouble in a former job, where I was doing my work and doing it well, but not doing it quite the way THEY thought I should. Same result, less time, more accurate, but all they thought was "she's being insubordinate."
My brain goes in all directions at once, I may get distracted when trying to do a lot of things, or I may jump from one thing to the next but I still get it all done.
Honestly, the biggest problem with ADHD isn't actually having it. It's living in a world where people are so structured about having to do everything THEIR way, they will make you feel like you're wrong and stupid for doing things any other way.
My entire (undiagnosed) childhood, I was told I just wasn't applying myself, I couldn't follow directions, I was lazy, I daydreamed too much.
I wasn't diagnosed until I was 31, at which point I had all kinds of comorbid disorders like anxiety and depression, from all those years of trying to do things everyone else's way.