Berry, L. L.
(1995).
On Great Service: A Framework for Action.
"Job-relevant learning is a good tonic that helps human beings overcome the repetitiousness, fatigue, 'onstage' pressures, and sense of powerlessness that accompany many service roles. Personal growth is a source of self-esteem for people in jobs that can burn up esteem as though it were jet fuel." (p. 189)