This document discusses what makes a good manager and the importance of well-being and performance. It provides statistics showing how poor mental health can negatively impact job performance. It defines well-being as a sense of feeling well and energized, and the performance model as having clear aims and being able to work without distraction. The document also discusses stress, noting that pressure can be energizing but too much leads to strain and then stress, which impairs performance. Signs of stress like fatigue and illness are outlined. The impacts of stress at work on costs like sick leave and staff turnover are also summarized.