Social media grenade-launcher Matt Walsh recently posted the following on his FaceBook page: "Many people claim to know for a fact that the practice of psychotherapy has been deeply helpful to humanity. To those people, I ask: If therapy is generally so helpful, and more people than ever are doing it, then why are people less able to deal with hardship and cope with suffering than ever before? Is it because our lives are really so much more difficult?" It's a fair question. It's certainly hard to make the case that our lives are so much more difficult than, say,...