A psychology study of more than 4,000 millionaires found that people with more wealth are indeed happier with life. They also found that people who earned their wealth were happier than those who inherited it.
According to Stanford psychologists, the the advice “find your passion” could have negative affect on people because it implies that the number of interests a person has is limited. That causes people to narrow their focus and neglect other areas.
Hedonic adaptation is the tendency for people to return to a baseline happiness level regardless of what happens to them. A study conducted on lottery winners and paraplegics concluded that neither group was either happier or sadder less than 6 months after the event.
People who refer to themselves by name during inner monologues are calmer, less stressed and more confident than those who use “I” or “me” according to a research done by Michigan State University.
The IKEA effect makes people think anything they make themselves has increased value.
Codependency is characterized by sacrificing one’s personal needs in order to try to meet the needs of others and is associated with passivity and feelings of shame, low self-worth, or insecurity.
People who post Facebook status updates about their romantic partner are more likely to have low self-esteem, while those who brag about diets, exercise, and accomplishments are typically narcissists.