Unpleasant emotions can be strongly “propulsive,” spurring us to make changes to our situation, perspective, values, and commitments. These changes are often positive, even crucial to our pursuit of the good life. But under what conditions are unpleasant emotions strongly propulsive? I argue that the source of affective propulsion should not be located in the mere unpleasantness of a given emotion, but, rather, in the emotional context in which the emotion arises. Drawing on Martin Heidegger’s comparative analysis of “shallow” and (...) “deep” boredom, I claim that the propulsive quality of an emotion arises not from its intrinsic properties but from the ambivalence generated when two affective states simultaneously influence our sense-making activity in opposing ways. (shrink)