Having lived and walked amongst evangelicals for the better part of 20 years now and having identified myself as one of their number, I have come to this disturbing conclusion: as a people, we do not know how to pray. Moreover, if I am being completely transparent, then I should clearly state that I also am an abject failure when it comes to knowing how to pray. Now there is a great deal more that could be said on this subject, but rather than addressing it as an academic matter, I have simply decided to share some written prayers from two new books that I am using in my own prayer life.
“If any one thing characterizes these prayers, I hope … it is a confidence that God wants our prayers and the prayers God wants are our prayers. We do not need to hide anything from God, which is a good thing given the fact that any attempt to hide from God will not work. God wants us to cry, to shout, to say what we think we understand and what we do not.” 
As for the two books I am using, I gladly share them below on the condition that you would consider adding your own resources to my list. For you see, when I went looking for books on prayer, I quickly discovered that there is a wealth of evangelical material that talks about praying, but very little material that actually shares prayers that have been prayed either in solitude or as a body. So if you have any suggestions that you could add to the admittedly meager library I am utilizing, I would be ever so grateful for your willingness to share them in the comment section below.
Prayers for a Privileged People by Walter Bruggemann
Prayers Plainly Spoken by Stanley Hauerwas
Now, may the words of these penitent faithful bless you as they have blessed me, opening up new ways of talking to the One Who Washed Our Feet.
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“Teach Me to Beg”
Dear Jesus, send your Spirit on us so that we will be taught to pray. Prayer is hard, requiring great effort, but when done, effortless. I confess I have never liked to pray. Prayer is too much like begging. So I have to pray that your generous Spirit will teach me to beg. I beg you to help all of us discover that our lives are constituted by prayer, so that we may be in your world one mighty, joyous prayer. Make us so rested by such prayer, so content to be your people, that we kill no more. 
 Stanley Hauerwas, Prayers Plainly Spoken (Eugene, Oregon: Wipf and Stock Publishers, 1999), 17.
 Ibid., 24.