This is a summary of decades of research to question: what makes us happy? Though two millennia ago Aristotle has proposed answer. According to Aristotle, happiness consists in achieving, through the course of a whole lifetime, all the goods — health, wealth, knowledge, friends, etc. — that lead to the perfection of human nature and to the enrichment of human life. Nowadays, we have a grand scale survey to test Aristotle hypothesis. He seems got it right. In first part, we give you summary of 10 things that makes you happy. In second part, we provide research that give evidence about the link between close relationship (marriage) to happiness.

What makes this research great: It surveys more than 31 thousands people from around the world, so it can eliminate individual bias.

Here is another evidence that marriage enhance quality of life:

What makes this research great: It has two advantages: (1) The data are very large (more than 11 thousand participants), (2) It also uses longitudinal method. Longitudinal method can be used to observe change among participants.