Hi David:
I agree we can all be an outstanding version of ouselves. Your version and my version of motivation or enthusiasm may differ, but it's nthe trait that makes the difference, not so much the specfic way the teacher goes about it.
I think when students sense their teacher is being honest and sincere, are genuine in their delivery, and teach their material well with passion, enthusiasm, and patience, they will get a positive response from their students, and from that, better student outcomes.
Regards, Barry