Giving lessons is generally regarded as the essential core of teaching work, yet it is just one of the components. The job also includes encouraging students to express themselves, helping them develop their potentials and preparing them for adult life. All these may be achieved through the influence of teachers, not only in the classroom but also in extra-curricular activities in which teachers may establish a more personal relationship with their students. Those who wish to join the profession must get well prepared for the increasingly complicated and demanding roles.