People who devote their lives to studying something often come to believe that the object of their fascination is the key to understanding everything. - Jonathan Haidt

Happiness is not something that you can find, acquire, or achieve directly. You have to get the conditions right and then wait. Some of those conditions are within you, such as coherence among the parts and levels of your personality. Other conditions require relationships to things beyond you: Just as plants need sun, water, and good soil to thrive, people need love, work, and a connection to something larger. It is worth striving to get the right relationships between yourself and others, between yourself and your work, and between yourself and something larger than yourself. If you get these relationships right, a sense of purpose and meaning will emerge.

There is nothing either good or bad, but thinking makes it so.

In fact, happiness is one of the most highly heritable aspects of personality. Twin studies generally show that from 50 percent to 80 percent of all the variance among people in their average levels of happiness can be explained by differences in their genes rather than in their life experiences. 28 (Particular episodes of joy or depression, however, must usually be understood by looking at how life events interact with a person’s emotional predisposition.)