“While some of our habits are acquired by choosing to engage in certain practices (e.g., signing up for drivers’ ed. or registering for piano lessons), many are acquired without our knowing it. And this might happen especially when we are unaware of it. If we are inattentive to the formative role of practices, or if we treat some practices as thin when they are thick, then we will be inattentive to all the ways that such practices unwittingly and unintentionally become automated. We will fail to recognize that they are forming in us habits and desires, oriented to particular ends that function to draw us toward those ends at an affective, unconscious level such that we become certain kinds of people without even being aware of it.
Liturgies are rituals of ultimate concern: rituals that are formative for identity, that inculcate particular visions of the good life, and do so in a way that means to trump other ritual formations. Our thickest practices – which are not necessarily linked to institutional religion – have a liturgical function insofar as they are a certain species of ritual practice that aim to do nothing less than shape our identity by shaping our desire for what we envision as the kingdom – the ideal of human flourishing.”
James K.A. Smith, “Love Takes Practice” in Desiring the Kingdom, pp. 85-87