The scientific study of happiness has exploded over the past three decades. The Nobel Prize winners Daniel Kahneman and Angus Deaton (both at Princeton University) publish extensively on the subject. The University of Pennsylvania has a whole graduate-degree program in positive psychology, led by Martin Seligman, one of the most distinguished social psychologists in the world. A peer-reviewed academic journal called the Journal of Happiness Studies has been in operation since the year 2000 and enjoys high prestige in scholarly circles.

Religion, philosophy, and the arts have long considered happiness a subject suitable for study. The sciences have only recently caught up. This column, which we’re calling “How to Build a Life,” will draw on all these sources of wisdom in the hope of helping you identify the building blocks of happiness—family, career, friendships, faith, and so on—and giving you the tools to use them to construct a life that is balanced and full of meaning, and that serves your values.

This column has been in the works for some time, but my hope is that launching it during the pandemic will help you leverage a contemplative mindset while you have the time to think about what matters most to you. I hope this column will enrich your life, and equip you to enrich the lives of the people you love and lead.

To start us off, I want to give you three equations for well-being—equations that, in my opinion, you need to know to start managing your own happiness more proactively.

Equation 1: Subjective Well-being = Genes + Circumstances + Habits

Subjective well-being is a term of art usually used by social scientists. Why not happiness? Many scientists consider happiness as a term to be too vague and too subjective, and to contain too many competing ideas. In everyday language, happiness is used to denote everything from a passing good mood to a deeper sense of meaning in life. The term subjective well-being, on the other hand, refers to an answer to this kind of question: “Taken all together, how would you say things are these days—would you say that you are very happy, pretty happy, or not too happy?” (That is the actual wording from one of the most prominent surveys that address the subject, the General Social Survey.)

Read: The Yale happiness class, distilled

Equation 1 summarizes a vast amount of literature on subjective well-being, starting with the question of the heritability of happiness. Personally, I dislike the idea that happiness is genetic; I dislike the idea that anything about my character or personality is genetic, because I want to be fully in charge of building my life. But the research is clear that there is a huge genetic component in determining your “set point” for subjective well-being, the baseline you always seem to return to after events sway your mood. In an article in the journal Psychological Science reporting on an analysis of twins—including identical twins reared apart and then tested for subjective well-being as adults—the psychologists David Lykken and Auke Tellegen estimate that the genetic component of a person’s well-being is between 44 percent and 52 percent, that is, about half.