A friend told me a touching story about his high-school classmate—a story that I now believe happens, in some form, to almost everybody. It happened to me, and probably to you.

The classmate was known as a gifted athlete and a bad student, and acknowledged it himself. He played wide receiver on the football team, but he had a maddening habit of lining up on the wrong side, and cutting right when he was supposed to cut left. The coach kept him on the team because he was fast and played hard, and his route-running mistakes could be corrected.

But the mistakes continued, and the coach quickly surmised that something else was going on. He eventually had the student visit a psychologist, and it turned out he was inverting the pass patterns because he was dyslexic.

This explained his trouble in the classroom too. He wasn’t a bad student, he just had no idea he was experiencing schoolwork so differently than everyone else. Once he was assessed, he (and his teachers) could finally make sure he had the extra time he needed to do his assignments.

You can find countless similar stories of kids who were told for years that they weren’t paying attention or weren’t applying themselves, when they actually just needed glasses and couldn’t read the blackboard. What a world-shifting discovery that must be for each of those kids, as well as for their parents and teachers.

I now wonder if most of us are, in some respect, the kid who needs glasses but doesn’t know it. It’s a phenomenon common to so many life stories: struggling desperately with something because you’re unaware that you’re experiencing it differently than everyone around you.