Happiness is primarily associated with the emotion of joy, which is characterized by feelings of contentment, pleasure, and well-being.

The hedonic treadmill theory suggests that people's happiness levels tend to return to their baseline level after experiencing positive or negative events.

Research has shown that strong social relationships and connections with others are consistently associated with higher levels of happiness and well-being.

The negativity bias refers to the tendency for people to pay more attention to and remember negative information compared to positive information.

Savoring involves intentionally focusing on and appreciating positive experiences in order to enhance their impact on happiness and well-being.

Research has shown that spending time in nature, exercising regularly, and volunteering and helping others are all activities that have been associated with increased happiness and well-being.

The pessimism bias refers to the tendency for people to overestimate the likelihood of negative events happening to them and underestimate the likelihood of positive events happening to them.

Flow is a state of complete absorption in an activity, where people feel fully engaged and focused, and time seems to pass quickly.

Research has shown that material wealth beyond a certain point does not lead to increased happiness. In fact, it can sometimes be associated with lower levels of happiness.

Social comparison refers to the tendency for people to compare themselves to others and evaluate their own worth and abilities based on these comparisons.

Gratitude involves being thankful and appreciative for the positive things in life, both big and small.

Research has shown that comparing oneself to others, especially on social media, can lead to decreased happiness and self-esteem.

The positivity bias refers to the tendency for people to focus on the positive aspects of their lives and ignore or minimize the negative aspects.

Self-determination theory proposes that people have three basic psychological needs: autonomy (the need to feel in control of one's own life), competence (the need to feel capable and effective), and relatedness (the need to feel connected to others).

Research has shown that strong social relationships and connections with others are consistently associated with higher levels of happiness and well-being.