There have been much research done on adult workers' psychological burnout, but there has not been a study done from C. G. Jung's analytical psychology perspective. This study points out that teachers' psychological burnout originating from the educational reality in Korea results from teachers' excessive identification with the “persona” conceptualized by Jung. If the teachers follow only the “teacher's image” required by Korean society, they lose the relationship with their internal spiritual world and, as a result, run dry of all the energy of ego consciousness. When teachers are burnt out, their unconsciousness, which is their other personality, is inclined to make the teachers be “themselves”. In order to overcome their burnout at this stage, they have to free themselves from their identification with the “teacher persona” of the outside world and have to be able to tell the difference between them. By examining their inner world and restoring their relationship with their unconsciousness, they come to experience the maturing process from an ego-centered life to a Self(wholeness)-centered life. Jung refers to this process as self-actualization, namely, the individuation process.