Maybe you'll take the cash out. So a credit card company or a bank that goes into the business of saying we're going to be the broker, we're going to sell you a mortgage that you're going to be able to pay off, we're going to help you reduce your credit card debt, we're going to help you save for retirement, we're going to put you into mutual funds that have low fees rather than high fees.

Most economists, including me, agree that longevity insurance would make sense for a lot of people.

So, what's a nudge? A nudge is some small feature of the environment that attracts our attention and alters our behavior.

Investors must keep in mind that there's a difference between a good company and a good stock. After all, you can buy a good car but pay too much for it.

Recall that people like to do what most people think it is right to do; recall too that people like to do what most people actually do.

It would be much more consumer friendly for them to beep you when you swipe your card that says, uh-oh you're over your limit, are you sure you want to use that?

There are cases when I can make myself better off by restricting my future choices and commit myself to a specific course of action.