The book Transformation of Suffering by Venerable Khenpo Konchog Gyaltshen Rinpoche is an excellent choice. My intention in writing this book was to teach every level of practitioner the nature of samsara and nirvana. For this reason, there are especially detailed chapters on suffering and bodhicitta. When reading about suffering, it is very important to remain objective and not let it becomes depressing. As one reads further, it is my hope that readers will gain a clear understanding of how samsara is a state of suffering and how, through the method of bodhicitta practice, suffering can be used as a means of purification.
Human beings have the ability to cultivate virtue and dispel ignorance.
Precisely because of this inborn potential for Enlightenment, humans can liberate themselves from suffering and all its causes. Therefore, we should always rejoice at our good fortune to learn about suffering and how to be freed from it. By the innate roots of virtues, may all sentient beings seek omniscience without ever retreating. While being in the various realms of existence, may their minds be undisturbed. May they be able to liberate all sentient beings.