Good teaching requires strong, personal relationships with students so that what is being taught may be taught well and be resilient in the students' minds. Building good relationships with students and always being attentive to them will help in discovering all the positive and negative facets of your teaching and can help in building alternatives to accomodate for a specific student or group of students. In this case, it is up to the teacher to be humble--in the fact that they can and must be criticized if they want to progress anywhere with teaching their students--along with being empathetic to students' educational and personal needs.