Roy Baumeister (author of Willpower), Jennifer Aaker (author of the Dragonfly Effect), Kathleen Vohs and Emily Garbinsky have a new paper that explores the similarities and differences between happy and meaningful lives.

Here are some highlights from the research:

1) Happiness and meaningfulness are related, but distinct.

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2) Easy lives are happier and difficult lives are more sad. If anything, the trend seemed to be the opposite for meaningfulness. Being healthy and frequently feeling good were both connected to happiness but neither had any connection to meaning.

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3) By and large, money had a big effect on happiness but had little effect on meaning.

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4) Thinking about the present was connected to happiness. The more people thought about the past and the future, the more meaningful their lives were — but less happy.

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5) Time spent with other people was connected to both happiness and meaningfulness. Time spent with loved ones was important to meaning but irrelevant to happiness.

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6) Happy people are takers, people with meaning are givers.

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7) Are you a worrier? It’s linked to lower happiness — but higher meaning.

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8) Want a quick summary?

Our findings suggest that happiness is mainly about getting what one wants and needs, including from other people or even just by using money. In contrast, meaningfulness was linked to doing things that express and reflect the self, and in particular to doing positive things for others. Meaningful involvements increase one’s stress, worries, arguments, and anxiety, which reduce happiness. (Spending money to get things went with happiness, but managing money was linked to meaningfulness.) Happiness went with being a taker more than a giver, while meaningfulness was associated with being a giver more than a taker. Whereas happiness was focused on feeling good in the present, meaningfulness integrated past, present, and future, and it sometimes meant feeling bad. Past misfortunes reduce present happiness, but they are linked to higher meaningfulness — perhaps because people cope with them by finding meaning.

Read the article for more details.