Many of our endeavors—be it personal or communal, technological or artistic—aim at eradicating all traces of dissatisfaction from our daily lives. They seek to cure us of our discontent in order to deliver us a fuller and flourishing existence. But what if ubiquitous pleasure and instant fulfillment make our lives worse, not better? In Propelled, Andreas Elpidorou makes a lively case for the value of discontent and illustrates how boredom, frustration, and anticipation are good for us. Weaving together stories from sources as wide-ranging as classical literature, social and cognitive psychology, philosophy, art, and video games, Elpidorou shows that these psychological states aren't unpleasant accidents of our lives. Rather, they illuminate our desires and expectations, inform us when we find ourselves stuck in unpleasant and unfulfilling situations, and motivate us to furnish our lives with meaning, interest, and value. Boredom, frustration, and anticipation aren't obstacles to our goals—they are our guides, propelling us into lives that are truly our own.