We all have varying degrees of flexibility. As children, most of us exhibit lots of flexibility. As soon as a friend calls we are out the door. Growth and maturity appear to dampen our willingness to bend or stretch in different ways. If we think about this situation, we realize the sadness of our plight. We may be free in body but our minds and thinking become more and more enslaved until we perform our duties ritualistically.
I am not sure how many people use the term nitpicking, but the meaning seems to be understood by all. I was recently accused of this and I felt horrible, to say the least. When it comes from someone you love, it is even worse. Of course, my mind was immediately filled with anger and thoughts of retaliation.