This 1986 edition of this wonderful book is the third edition of the text originally published in 1977 (1984's was the 2nd edition, and this is the second printing of that edition). It's a great book with clear and concise translation (by Brian Beresford) of teachings from Geshes Rabten and Dhargyey on the Mahayana tradition of "Thought Transformation" (Lojong) - a tradition of teachings which, although Buddhist, is universal and applicable to us all regardless of nationality, culture or religion). It's also a handsomely published book (firm soft-cover, "Wisdom Basic Book - Orange Series"), and although now out of print is well worth finding.
There is a later 1996 (and again in 2001) edition with the same title, also by Wisdom, but it isn't exactly the same book. The later edition puts the shorter text by Geshe Dhatgyey first, and does not include Part Four - A Daily Prayer, nor the texts in Tibetan for the Eight Stanzas and Seven Points, nor the illustrations from the original editions (a nice collection of black and white photos taken of the teachers-in-exile in India). For this reason I strongly recommend getting/reading the Basic Book Orange Series editions.