“as you will learn, however, neuroscience now shows us how this process—and much more—occurs in the brain to make an emotion on the spot. I call this explanation the theory of constructed emotion: 

In every waking moment, your brain uses past experience, organized as concepts, to guide your actions and give your sensations meaning. When the concepts involved are emotion concepts, your brain constructs instances of emotion.”

Lisa Feldman Barrett, How Emotions Are Made