This thesis investigated wellbeing and burnout in mental health settings. Paper one reports a systematic review of literature pertaining to staff wellbeing and/ or burnout in mental health services, and the relationship this has with quality of care from the perspective of both staff and users of services. Overall the studies reported relationships between staff burnout, and to a lesser extent, wellbeing, on the quality of care provided to service users. Paper two reports an empirical study of the perceived domains that influence the wellbeing of practitioners working in psychological roles. The empirical paper adopted a qualitative methodology. Practitioners cited four key themes that they perceived to have an impact on their subjective wellbeing, and one further theme regarding what can be done to improve staff wellbeing. Paper three provides a critical review of the work undertaken in part one and part two of the thesis. This section considers the relative strengths and limitations of both papers and provides suggestions for both clinical implications and areas for future research. This paper provides an opportunity for the author to reflect on their experience in completing both papers.