We all know a few people that treat causing grief like it's a career. It's as if your life is a video game and they were put here just to make finishing this level harder.

These aren't simple jerks or someone having a bad day; these are folks with deep-seated problems. Serious interpersonal dysfunction. Lack of social awareness. And, perhaps most notably, an inability to change.

The DSM-5 says that roughly 15% of people meet the criteria for a personality disorder. And most of them are never diagnosed. Now you're not a psychiatrist and neither am I, so we shouldn't run around diagnosing people...