While there is an increasing interest in the notion of well-being--politically, societally and educationally--it remains an enigmatic, multifaceted concept that sometimes eludes definition in academic articles. This article takes account of policy developments in the area of well-being over the last decade in Ireland, particularly educational policy developments. It presents research findings from a study conducted with primary school teachers on the west coast of Ireland about what well-being means to them as teachers and their challenges in promoting it. The findings highlight that well-being is open to many interpretations, and there is a clear gap between the language of well-being policy documents and the practices taking place in schools.