An executive might have a very strong intuition that a given product has promise, without considering the probability that a rival is already ahead in developing the same product.

The average investor's return is significantly lower than market indices due primarily to market timing.

Every night for the next week, set aside ten minutes before you go to sleep. Write down three things that went well today and why they went well...Writing about why the positive events in your life happened may seem awkward at first, but please stick with it for one week. It will get easier. The odds are that you will be less depressed, happier, and addicted to this exercise six months from now.

We can be blind to the obvious, and we are also blind to our blindness.

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

A reliable way to make people believe in falsehoods is frequent repetition, because familiarity is not easily distinguished from truth. Authoritarian institutions and marketers have always known this fact.

People are really happier with friends than they are with their families or their spouse or their child.