Reddit reviews Leading in Prayer: A Workbook for Worship

Valley of Vision, BCP, Psalms. Pick up a copy of Hughes Oliphant Old's excellent book on Leading in Prayer, while you're at it. As well as Richard Pratt's Pray with Your Eyes Open, particularly if you struggle praying through the Psalms.

And let me encourage you to buy the physical copies, to disconnect and unplug and go and pray these prayers individually. Get out of your normal routine and comfort zone, and read. Buy a good bag that can fit several prayer books, and carry them with you. Jesus' example was to do just that: get away and pray. I'd encourage you and everyone else to do the same.