Part of the sequence: The Science of Winning at Life

One day a coworker said to me, "Luke! You're, like, the happiest person I know! How come you're so happy all the time?"

It was probably a rhetorical question, but I had a very long answer to give. See, I was unhappy for most of my life,¹ and even considered suicide a few times. Then I spent two years studying the science of happiness. Now, happiness is my natural state. I can't remember the last time I felt unhappy for longer than 20 minutes.

That kind of change won't happen for everyone, or even most people (beware of other-optimizing), but it's worth a shot! 

We all want to be happy, and happiness is useful for other things, too.² For example, happiness improves physical health,³ improves creativity,⁴ and even enables you to make better decisions.⁵ (It's harder to be rational when you're unhappy.⁶) So, as part of a series on how to win at life with science and rationality, let's review the science of happiness.

The correlates of happiness

Earlier, I noted that there is an abundance of research on factors that correlate with subjective well-being (individuals' own assessments of their happiness and life satisfaction).

Factors that don't correlate much with happiness include: age,⁷ gender,⁸ parenthood,⁹ intelligence,¹⁰ physical attractiveness,¹¹ and money¹² (as long as you're above the poverty line). Factors that correlate moderately with happiness include: health,¹³ social activity,¹⁴ and religiosity.¹⁵ Factors that correlate strongly with happiness include: genetics,¹⁶ love and relationship satisfaction,¹⁷ and work satisfaction.¹⁸

But correlation is not enough. We want to know what causes happiness. And that is a trickier thing to measure. But we do know a few things.

Happiness, personality, and skills

Genes account for about 50% of the variance in happiness.¹⁹ Even lottery winners and newly-made quadriplegics do not see as much of a change in happiness as you would expect.²⁰ Presumably, genes shape your happiness by shaping your personality, which is known to be quite heritable.²¹

So which personality traits tend to correlate most with happiness? Extroversion is among the best predictors of happiness,²² as are conscientiousness, agreeableness, self-esteem, and optimism.²³

What if you don't have those traits? The first thing to say is that you might be capable of them without knowing it. Introversion, for example, can be exacerbated by a lack of social skills. If you decide to learn and practice social skills, you might find that you are more extroverted than you thought! (That's what happened to me.) The same goes for conscientiousness, agreeableness, self-esteem, and optimism - these are only partly linked to personality. They are to some extent learnable skills, and learning these skills (or even "acting as if") can increase happiness.²⁴

The second thing to say is that lacking some of these traits does not, of course, doom you to unhappiness.