Friends are sometimes a big help when they share your feelings. In the context of decisions, the friends who will serve you best are those who understand your feelings but are not overly impressed by them.

Endlessly amused by people's minds.

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

If people are failing, they look inept. If people are succeeding, they look strong and good and competent. That's the 'halo effect.' Your first impression of a thing sets up your subsequent beliefs. If the company looks inept to you, you may assume everything else they do is inept.

Nothing in life is quite as important as you think it is while you're thinking about it.

Negotiations over a shrinking pie are especially difficult because they require an allocation of losses. People tend to be much more easygoing when they bargain over an expanding pie.

The amount of success it takes for leaders to become overconfident isn't terribly large.