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If you are afraid of being criticized, don't be a writer. 

You are not writing a documentary. Your responsibility is not to correctly diagnose your characters. Your responsibility is to focus your story on the one thing that your story is about and push it to its maximum extent. To do that, you are probably going to have to put your characters through levels of trauma that would break most people physically and mentally. 

Consider the amount of violence and gunfire that most characters in most cop shows endure on a weekly basis. Any real cop would have been a basket case by episode six. 

Ask yourself how Tony Stark avoids a concussion when he get punched in his armor plated head by supervillains. Fictional characters are much more durable than regular people. 

Unless, for the purposes of some particular story, they are not. 

But there are lots of idiots in the world with an axe to grind or who simply do know how to read. If you are afraid of being criticized, don't be a writer.