Happiness is the ultimate goal of life for many people. Just take a look at the hundreds of self-help books, motivational speakers, and life coaches whose primary goal is to improve subjective well-being and happiness. Even people who are already satisfied with their lives aspire to be happier. Early psychological research on happiness focused on identifying the factors that would allow people to achieve high subjective well-being. More recently, psychologists have begun to acknowledge that happiness is not just an end state that results when things go well. Instead, happiness may also be functional. For example, researchers have found that happy people did better on average than did unhappy people in the domains of work, love and health.
In light of these attempts to boost happiness, it is interesting to question whether being happier is always better. Oishi, Diener and Lucas’s (2007) study investigated the differences between moderately happy and very happy people to address questions about the optimal level of happiness. Their findings showed that people who experience the highest levels of happiness are the most successful in terms of close relationships and volunteer work, but that those who experience slightly lower levels of happiness are the most successful in terms of income, education, and political participation. They interpreted that the optimal level of happiness is likely to vary across individuals, depending on their value priorities. For those whose primary values center on achievement, moderately high levels of happiness may be optimal; for those individuals whose values give priority to close relationships and volunteer work, it is the highest level of happiness that appears to be optimal. In sum, their findings suggested that extremely high levels of happiness might not be a desirable goal. However, the critical question to answer is, “How much happiness is enough?”