If you want the next half of your life to be just as good as the first, then you've got to get a grip on these three things, says Jo Ann Jenkins, the new CEO of AARP. We talk about how to reimagine the life you're living now to put yourself on a healthier, wealthier and more self-satisfied track. Then "Behavior Gap" author Carl Richards explains why he believes you should wait 72 hours before buying pretty much anything.

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