Thanks for your response! If I can ask a follow-up question, when did you decide to do EM (was that something you knew going into medical school?) and how did you know that this was the right field for you?
That said, in third year when I did my clinical rotations, I went into every rotation thinking honestly that I could see myself doing it. I am and was interested in pretty much every field (which helps in EM). If you can force yourself to step back and realize how cool much of what we do in medicine is, from a scientific or technologic perspective, and how great the trust that others place in the field and its practitioners is, I think it makes it easier to learn and succeed as a student.