When I am mowing the lawn that is work and when I am sitting quietly with the Bible that is prayer. When I am writing checks to pay the bills that is profane and when I am standing over the bread and wine behind this table that is holy. We need to avoid that kind of dualistic thinking and understand that all of life is permeated by God's presence. When we see God in everything and in every moment then we know that paying the bills can be a form of prayer. Dualistic thinking gets us into all sorts of trouble.
Dualism suggests that life can be separated into good and evil.
I prefer to think that nothing escapes God's gracious presence and that since the Kingdom is immanent all of life is a prayer. It isn't something we have to stop everything in order to engage, it is a way of perceiving the world. It is not as if some of our words are prayer and others are ordinary speech, all of life is prayer, every word is part of our ongoing conversation with God. That seems to be Paul's understanding of prayer. He doesn't sound like someone who thought of prayer as a sometime thing or a let's stop and pray kind of activity.