Slow, deep, natural breathing is a fundamental aspect of meditation practice. In a childlike awareness of each breath, breathing out we are quietly aware of breathing out. Breathing in we are quietly aware of breathing in. In this way, our awareness becomes one with the primitive rhythms of our breathing, one with the simply given nature of now's ceaseless flow in which our life is rooted.
There are many different kinds of prayer. Yet all prayer has one basic purpose. We pray not to get something, but to open up a two-way street between us and God so that we (and others) may inwardly become something beautiful that we share with others.