...character is not only moral, it is also mental. Heroism exists not only on the battlefield or in public but also inside the head, in the ability to face unpleasant thoughts. ... There’s a seller’s market in ideologies that gives people a chance to feel victimized. There’s a rigidity to political debate. Issues like tax cuts and the size of government, which should be shaped by circumstances (often it’s good to cut taxes; sometimes it’s necessary to raise them), are now treated as inflexible tests of tribal purity. To use a fancy word, there’s a metacognition deficit. Very few in public life habitually step back and think about the weakness in their own thinking and what they should do to compensate. A few people I interview do this regularly (in fact, Larry Summers is one). But it is rare. The rigors of combat discourage it.
Op-Ed Columnist - A Case of Mental Courage - NYTimes.com