Joseph Grenny's books are practical self-help nonfiction about how people handle difficult moments and change behavior. Crucial Conversations: Tools for Talking When Stakes Are High offers a framework for talking through disagreements when emotions run strong, written with Kerry Patterson, Ron McMillan and Al Switzler. Influencer: The Power to Change Anything turns to changing habits and behavior, with Patterson, David Maxfield, McMillan and Switzler.