Recall that students will not learn what they do not love. This is one reason the fundamental aspect of education is the proper ordering of the students’ loves.
And, a love for one’s subject matter is quite possibly the most challenging task for a teacher because all the commercialized world is clamoring for the students’ affections.
The internet, video games, consumer products, acceptance amongst peers, affection from the opposite sex, and influential family members who’s own loves are improperly ordered are just the beginning of a long list of competitors for the students’ attention and affection.
One place teachers might start is with having properly ordered loves themselves–including loving the subject properly. Delight, enthusiasm, and love are quite contagious.