I looked back up and took a few more steps. I thought: "Oh no, I wouldn't have done that." Looking back down at my feet confirmed my initial observation: I was wearing two different colored shoes. One was black, the other was navy.
I was in high school when I stopped wearing shoes. There was probably a reason, as far as reason goes when you're in high school, but I can't imagine any reason beyond pushing my mother's buttons.
There are three things that stand out in my mind as being major aspects of personal and professional development: Being able to tell your story, practicing creativity, and curiosity.