Enjoyment appears at the boundary between boredom and anxiety, when the challenges are just balanced with the person’s capacity to act.

Cal Newport Deep Work: Rules for Focused Success in a Distracted World

Mihaly Csikszentmihalyi Flow: The Psychology of Optimal Experience (Harper Perennial Modern Classics)

Derren Brown Happy: Why More or Less Everything is Absolutely Fine

Ph.D. Richard Schwartz No Bad Parts: Healing Trauma and Restoring Wholeness with the Internal Family Systems Model

Mihaly Csikszentmihalyi Flow: The Psychology of Happiness

Mihaly Csikszentmihalyi Flow: The Psychology of Happiness