Post-traumatic growth refers to the positive psychological changes that can occur in individuals who have experienced a traumatic event. It involves the development of new perspectives, increased appreciation for life, and a deeper sense of purpose and meaning. While not everyone who experiences trauma will experience post-traumatic growth, it's a testament to the human spirit's incredible capacity for resilience.

Gap theory of happiness posits that our unhappiness stems from the discrepancy between our current reality and our idealized version of life. We're always looking outward, focusing on what we don't have: better jobs, more money, more recognition, or simply more free time. When our lives are consumed by this constant pursuit of "what could be," we operate from a place of lack and dissatisfaction.