Mindfulness is an umbrella term for a set of practices and strategies related to attention and non-critical awareness of our thoughts. Mindfulness is currently having a moment in popular culture and in clinical psychology for its many perceived benefits. However, there are reasons to worry about whether certain commitments and strategies of mindfulness might conflict with long-term progress in character development. This article places mindfulness in conversation with developmental considerations of virtue, asking how mindfulness practices might impact the various stages between natural character and mature moral virtue in different ways. Moreover, it proposes a distinction between two kinds of virtues, presence and absence virtues, that are differently impacted by the continued use of mindfulness practices in the later stages of virtue development.