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.

My mantra is if you want to help people accomplish some goal, make it easy.

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.

Every American worker should be able to save for retirement via payroll deductions.

Most people start claiming benefits within a year of when they become eligible, although benefits increase substantially if they wait.

Everyone's lost a lot of money on their 401k plans. I've heard some people calling them 201k plans. So it's even more important to get people to be saving more for retirement. Behavioral economics has helped us learn a lot about how to do that.

he card companies will often, as a courtesy, honor that credit card, but hit you with a penalty. And you keep swiping your card for $3 at Starbucks for your latté, and you're getting hit with a $25 penalty because it's over your credit limit.