When I was a teacher, I had certain rules for myself. Rules about how I did my job. How I treated students. How I treated colleagues. How I treated parents. When I became a vice principal, I had to develop a somewhat different set of rules for myself as my job changed. When I became a principal, I had to develop a somewhat different set of rules for myself as my job changed. And even within each of those time periods, the rules I set for myself would evolve. Learn by doing. Then, there were the...