Very good piece

http://townhall.com/columnists/johnhawki...page/full/

Final Conclusion Wrote:The sequence goes something like this. Someone tells you that you are not very competent at something. If you are a shame-prone person, you start to experience that sinking feeling that the other person may be right and this is not the only thing that you are bad at, and maybe you are just a worthless loser in general. You start to feel panic, anxiety, and misery, and your heart beats faster. To break free of those feelings, you reject the premise. You are not incompetent in the way the other person said. The other person had no right to say that to you, and he's completely wrong. Your feelings are now directed outward at him, instead of yourself, and the effects of your faster heartbeat and general arousal transfer into intense anger at the person who has so unfairly insulted you. You want to hit him.

I think this is why so many teachers and journalists veer left.