I have read other books on Jesus Prayer, including that "Way Of The Pilgrim" book, but this was a great adding to that. This prayer is a very useful prayer from Eastern Orthodox tradition that can fill spaces between devotions and Masses, anytime anywhere, and is simple to say:
"Lord Jesus Christ, Son of God, have mercy on me, a sinner" (in Finnish, "Herra Jeesus Kristus, Jumalan Poika, armahda minua syntistä")
This book shows you how it is used, and how it offers help in making life feel simplier and more peaceful. The author clearly needed it, prone to thinking much, and needing it in frustrating moments of his work (he is an Anglican rector in Horsted Keynes). Although it talks about how the author benefits from it, and examples from his life, there's also plenty for the reader: on its history, and on its two parts, on how it links worship and life, some guide to using it, and on its effect of joy.
Some Bible examples within brought new light to the texts, like the one of unmerciful servant (Matt. 18:23-25) - which can be also about lack of mercy towards self. The author mentions the "Philokalia" series of holy writings of Eastern Orthodox holy men (and women) - this was a good read even though I merely borrowed it and kept the best quotes in a notebook. One could use, during this Jesus Prayer, a prayer rope (even just in your pocket), though it's not essential. (I have a set of 100 wooden beads.) One can use different movements, postures and bowings during it, set a certain time aside for it.
This is a great way to use to grow spiritually, get mental support for one's devout life, and is easy to remember. I guess it could be one way for the Holy Spirit to connect with us, too. The author benefited from it, and I'm sure if one takes it up to use, others may also find it surprisingly useful. I think I will start using it, too.