The Science of Happiness - How to Make Relationships Last

Mental subtraction can counter our tendency to adapt to the good things in relationships. It's sort of a snowball effect: One partner starts to appreciate the other more, so they want to do more nice things for them. And then that person feels appreciated and they want to return the favor. In this way, gratitude can promote generosity and commitment between people. We look at how play is good for our health, and what happens when we don't all have same access to it.