it is always insignificant instructions?

I get caught in frustrating loops, and one such just happened. It was in a sentence that could be described a peripheral. A man was talking about how from our early days we begin molding who we are, and who we are never naturally is who we need to be. They was the point, and it was a subpoint to a larger lecture point. But, in his lecture he said that his mother told him not to eat with his hands. This disturbed me, because in my mind one cannot possibly eat without using your hands, and then I would fail to see the larger more important picture. This happens quite often to me, like in Kindergarten, a teacher scolded me for improperly coloring in the lines, she told me that I ought not leave white places within my pictures when coloring. Only now do I understand her criticism. It effected me for years. I went on to be scolded for using too much crayon and scribbling too darkly, but I tried to protest that no matter how hard I scribbled there was some white that would show through. It must be caused by cheap crayons. And more recently, yet long ago, a psychologist gave me a sheet of paper and asked me to fold it in half, so I did, but he stopped the assessment right then because I had not followed his directions and that was a larger issue that needed to be addressed. I had folded the paper in half lengthwise. I was not trying yo be difficult or different, though that was what he claimed my issue was, when I went in hopes to find a way to reactivate dormant parts of my brain causing my hemiparalysis. I had reclaimed my sight, through working on my visual cortex, so I hoped that working on using my entire brain, I could recover all that had been lost. He was first assessing what damage had been done, and years later I observed a test frequently given to stroke victims to aid in recovery after the incident. I believe that is what my Doctor/therapist would have accomplished if I had not messed up.