If you really want to be joyful, you need to be surprised, often. And to do this, you really need to go outside. There’s only so much astonishment you can manufacture for yourself if you’re in your house or (worse) in your head all the time. You might come up with something unexpected in your refrigerator, but if you thought about it, you’d realize you should have seen it coming the moment you stuck that thing in the used yogurt container and shoved it toward the back. But if you’re outside, paying even a modicum of attention, something is bound to slap you happy.

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