The concept of happiness has to be reorganised.

A large portion of the weekend effects is explained by differences in the amount of time spent with friends or family between weekends and weekdays.

We don't see very far in the future, we are very focused on one idea at a time, one problem at a time, and all these are incompatible with rationality as economic theory assumes it.

People have little idea, by and large, of the investment world. They are convinced they have an advantage.

We are very influenced by completely automatic things that we have no control over, and we don't know we're doing it.

Optimism is normal, but some fortunate people are more optimistic than the rest of us. If you are genetically endowed with an optimistic bias, you hardly need to be told that you are a lucky person - you already feel fortunate.

The confidence that individuals have in their beliefs depends mostly on the quality of the story they can tell about what they see, even if they see little.