I would be slower to seek a clinical diagnosis, especially ADHD… it’s not that some people don’t genuinely have ADHD, it’s that it tends to get over-diagnosed. Having a hard time focusing on some things, or having a hard time focusing some times, isn’t the same as having an inability to focus on anything at all for any meaningful amount of time.
Sneki, what kinds of things are you finding it hard to concentrate on? That 15-page reading, was it something you were assigned to read or supposed to read rather than choosing on your own? Was the topic interesting? Was the writing engaging? (I know you said it was simple reading, but something might be simple and yet painfully dry.)
What kinds of things do you find yourself focusing on the way you want to?—Once you’ve got that, start looking at the variables. What about these things, or about the environments surrounding these things, draws your attention? Is there any way you can take some of those qualities and brings them into the stuff that is harder to find engaging?
What kind of environment are you trying to focus in? Is it always in the same place?—I’ve found that I get restless when I try to go through the same routine every day, but since I still have a lot of reading to get through, I change up my environment—different positions, different rooms, different places—finding little cafes in the area with comfortable places to do work… Perhaps finding a place with natural background noise will help you focus, especially if your internal music-track is distracting you… I would start experimenting. And, depending on what you are doing, you might find different environments help you focus. If I’m reading or writing, I like background noise or silence, but I can’t do music or talk radio (like someone mentioned above) because both are too crisp (specific rhythms, specific words) and pull me away from the content at hand. But for other tasks, I find music or radio quite enjoyable, I guess because the task I’m doing doesn’t need the part(s) of my brain that tracks melodies or narratives.
And then the content itself… if it’s something that’s boring, try to find ways to push through that you find motivating. Does promising yourself a reward at the end help? (It doesn’t usually help me, but I know many people who love this strategy.) Or reminding yourself why it’s important to do?
Specifically with reading… especially material I’m not interested in: I’ll try reading the text aloud like I would to an audience, with intonation designed to dramatize, and I can bring some emotional interest into whatever subject. Or sometimes, depending on the topic, I’ll remind myself what aspects of that topic I find interesting, and I’ll look for things that connect back to those aspects as I read—setting a sort of intention to the reading, so my mind is more actively engaged in parsing the information. Or I’ll try to pick apart the structure as I read “why are they saying this here?” and “wouldn’t x have been better to say?” or whatever, and become as much of a critic as a consumer of the text. Etc. Various methods or games of sort that I use to try and become more invested in the content, that I use to try and give my mind something more to do than just passively accepting. Maybe you can find similar strategies?