[groby_b]

> That's what I'd consider normal. How is ADHD different?

ADHD is different in that sustained focus takes a ton more of energy than for non-ADHD folks - if you're high functioning. And is almost impossible if you're not high-functioning.

Totally agreed that "can't focus on my breath for 10 seconds today" isn't ADHD. "I have repeatably sub-par executive function" very much is, though.

For your language learning example, it's more that somebody can't stay focused on the learning, even if they want to/have to and are aware their focus is sliding away.

There's a reason ADHD diagnosis is technically a process that's a bit involved, you're trying to test for both sub-par function, and for the repeatable part. I'd take self-diagnosis with a bit more salt, especially it's of the "I often forget my car keys" kind.