Simplicity

The central point for the Discipline of Simplicity is to seek the kingdom of God and the righteousness of his kingdom first and then everything necessary will come in its proper order. ...

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Focus upon the kingdom produces the inward reality, and without the inward reality we will degenerate into legalistic trivia.  Nothing else can be central.  The desire to get out of the rat race cannot be central, the redistribution of the world's wealth cannot be central, the concern for ecology cannot be central.  Seeking first God's kingdom and his righteousness, both personal and social, of that kingdom is the only thing that can be central in the Spiritual Discipline of simplicity.

Pages 86-87, Celebration of Discipline by Richard J. Foster