“The most important thing I did was to learn how to be me in front of my students.” I couldn’t agree more! I nodded all the way through this, and your experiences resonate with mine in many ways. I also began teaching without any formal training in pedagogy. I taught piano lessons in college to help make ends meet, and when it came time to teach history when I was in grad school, I started with the same approach you describe here — I’d been “in school” my whole life, so surely I would know how this thing worked?
For me, one of the main epiphanies came that first semester, when I realized that while my assumptions about “how to teach” might help me survive, my assumptions that I knew “what students were about” because I’d always been one, needed a major adjustment. Just because I knew what kind of student I had been did not mean I had a clue about what motivated different kinds of learners.