You can't force a brain to think what you want it to think. I couldn't even force myself to think what I wanted to think. I began to imagine my thinking brain as if it were a pet rhino that did as it pleased. Over time I learned a lot of tricks and hacks to function in the technical world and perform reliably. But it was a long journey.
I teach for a living now-- but I only teach the willing.
Teachers would like me, I don't think that any of them thought I was an idiot, but I wouldn't do my homework and they'd be stuck giving me middling-to-bad grades.
I eventually more or less figured out how to force myself to learn things I didn't care about, and I did eventually get my bachelors and a masters, but that wasn't until my 30's.
Honestly, these are the most important things to learn. I spend a lot of time with my kids talking about ways to get your brain to do what you want.