Choose a group—racial, religious, ethnic, political, whatever—and submerge your individual identity to it. Let the leader of the group do your thinking for you. And make sure that you never outgrow your colleagues. They wouldn't like that. 

Knock everything systematically. No matter what you hear and read, deprecate it. 

Never wait to hear the other side of anyone's story. Knowing both sides will only unsettle your mind. 

Never learn from experience. Keep on doing the same fool things again and again. 

Parrot all the expressions that are in vogue. Don't take the time to think through what they say. When new ones come along, adopt them right away. And be sure to drop the old ones. After all, you wouldn't want your peers to think that you're different from them; they may not like you anymore. 

Be a slave of statistics. Completely ignore the fact that every situation and every set of circumstances is new. That way you won't have to make an effort to think anything through. Why bother? The probable outcome has already been determined statistically by someone. 

Always take the word of an expert. Forget that the human brain, one of which you've got in your cranium, is the most awesome mechanism in the known world. Convince yourself that you could never know as much an expert. After all, that's why he or she is called an expert. 

Get into the habit of asking others for input whenever you have a problem. Doing that will cause your own problem-solving mechanism to deteriorate and eventually disappear. Which is just as well. Why carry excess baggage through life when you don't have to? 

Think about it.