The concept of loss aversion is certainly the most significant contribution of psychology to behavioral economics.

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.

Odd as it may seem, I am my remembering self, and the experiencing self, who does my living, is like a stranger to me.

So your emotional state really has a lot to do with what you're thinking about and what you're paying attention to.

We are far too willing to reject the belief that much of what we see in life is random.

Ten minutes of a smartphone in front of your nose is about the equivalent of an hour long walk in bright daylight. Imagine going for an hour long walk in bright daylight and then thinking, "Now I'll get some sleep." It ain't going to happen.

That's one of the real dangers of leader selection in many organizations: leaders are selected for overconfidence.