The concept of happiness is the subject discussed by Matt Killingsworth in his understanding happiness speech.
Happiness is subjective. According to Killingsworth in his understanding happiness speech, the reason why people strive to achieve for lives that can accommodate lifestyles with expensive houses and high-earning jobs is because individuals believe that by having those factors into their lives will bring happiness.
The financial state of an individual changes over the course of time. The objective conditions in the lives of individuals have the capacity to improve dramatically, but that doesn't necessarily translate into individuals becoming happier. In his understanding happiness speech, Killingsworth showcases how minuscule moments in the daily routines of individuals' lives can culminate into a happy life.