The Complete Idiot's Guide to Christian Prayers & Devotions, by James S. Bell Jr. and Tracy Macon Sumner.

Blurb

Through practical examples, The Complete Idiot’s Guide to Christian Prayers and Devotions demonstrates the impact of down-to-earth conversations with God. Organized by topic, this volume is ideal for browsing through prayers and devotions according to the your interest—from joy and depression to assistance and gratitude—and contains both modern-day prayers and prayers from antiquity.
--The only book currently on the market to include both prayers and devotions for Christians
--Organized by topic: joy, depression, giving thanks at holiday time, asking for assurance, prayers of contentment, prayers of salvation, and much more
--Author has written numerous books on religious topics and has been a prominent figure in religious publishing