The Great Treatise on the stages of the path to enlightenment. - adviced by Kristo(f) Gabriel

https://www.shambhala.com/the-great-treatise-on-the-stages-of-the-path-to-enlightenment-volume-1.html

By Tsong-kha-pa
Translated by Lamrim Chenmo Translation Committee
Edited by Joshua Cutler and Guy Newland