As Dr. Yager mentions in the first interview, the worst type of friend to have (out of 21 negative features she identifies) is "the risk taker" who "puts you in harm's way because of illegal or dangerous behavior." But she first points out that unrealistic expectations are a common reason even good friendships can hurt:YouTube - New Zealand TV interview with Jan Yager on friendship
YouTube - Jan Yager TV interview on WHEN FRIENDSHIP HURTS
YouTube - Oprah interview with Jan Yager on friendship
YouTube - Dr. Jan Yager, excerpts from a speech about friendship
YouTube - Jan Yager TV interview on WHEN FRIENDSHIP HURTS
YouTube - Oprah interview with Jan Yager on friendship
YouTube - Dr. Jan Yager, excerpts from a speech about friendship