This document discusses the relationship between well-being, engagement, and performance. It defines well-being as feeling good and functioning well. Higher well-being is associated with better relationships, health, work performance, and longevity. Engagement is also essential for business success, and engaged employees experience less stress and more enjoyment at work. Organizations that focus on employee well-being through building resilience and positive emotions outperform their competitors. The document advocates for a systems approach to create an upward spiral where feeling good leads to better functioning, which builds resources and undoing negative impacts to sustain engagement.