A welcome thesis and book by N. T. Wright.
From the book description:
Reading, studying, and praying the Psalms is God's means for teaching us what it means to be human: how to express our emotions and yearnings, how to reconcile our anger and our compassion, how to see our story in light of God's sweeping narrative of salvation. Wright provides the tools for understanding and incorporating these crucial verses into our own lives. His conclusion is simple: all Christians need to read, pray, sing, and live the Psalms.
http://www.harpercollins.com/browseinside/index.aspx?isbn13=9780062230508
