If owning stocks is a long-term project for you, following their changes constantly is a very, very bad idea. It's the worst possible thing you can do, because people are so sensitive to short-term losses. If you count your money every day, you'll be miserable.

There's a tendency to look at investments in isolation. Investors focus on the risk of individual securities.

Below an income of ... $60,000 a year, people are unhappy, and they get progressively unhappier the poorer they get. Above that, we get an absolutely flat line. ... Money does not buy you experiential happiness, but lack of money certainly buys you misery.

Overconfidence is a powerful source of illusions, primarily determined by the quality and coherence of the story that you can construct, not by its validity.

It is only a slight exaggeration to say that happiness is the experience of spending time with people you love and who love you.

Slow thinking has the feeling of something you do. It's deliberate.

The brains of humans contain a mechanism that is designed to give priority to bad news.