David Brandon 
Zen in the Art of Helping [PDF ebook] 

A succinct, uncompromising study of what it means to help other people, this book, first published in 1978, examines the helping process in the light of the principles of Zen Buddhism. Emphasizing the Zen precepts of true compassion, newness and Taoistic change, it explains how a helper can break down the artificial barriers that serve to separate people and hinder the helping process. As the teachings of Zen demonstrate, real compassion involves a selflessness and respect that can bring helper and helped together.