What they are, and how they work.
Robert Emmons on how gratitude benefits us: The social benefits are especially significant here because, after all, gratitude is a social emotion. I see it as a relationship-strengthening emotion because it requires us to see how we’ve been supported and affirmed by other people. Indeed, this cuts to very heart of my definition of gratitude, which has two components. First, it’s an affirmation of goodness. We affirm that there are good things in the world, gifts and benefits we’ve received.