FYI - for a gentle introduction to hesychasm, I'd strongly recommend "The Way of a Pilgrim". Eastern Orthodox, and simply written (in terms of understanding it)

FYI - for a gentle introduction to hesychasm, I'd strongly recommend "The Way of a Pilgrim". Eastern Orthodox, and simply written (in terms of understanding it). For a more involved approach try the "Philokalia" - but be prepared for heavy reading, and make sure you are getting the right book as the title has been used for other works.