It's about getting only 10 percent of what you wanted to do in a class done and still feeling good. It's about deviating from the course syllabus or lecture schedule easily when there is more and better learning elsewhere. Good teaching is about the creative balance between being an authoritarian dictator on the one hand and a pushover on the other. Good teaching is also about style. Effective teaching is not about being locked with both hands glued to a podium or having your eyes fixated on a slide projector while you drone on.
Good teachers work the room and every student in it.
They realize that they are the conductors and the class is the orchestra. All students play different instruments and at varying proficiencies. It's about being self-deprecating and not taking yourself too seriously. It's often about making innocuous jokes, mostly at your own expense, so that the ice breaks and students learn in a more relaxed atmosphere where you, like them, are human with your own share of faults and shortcomings. Good teaching is about caring, nurturing, and developing minds and talents.