I'm not saying that we're, by any means, qualified to self diagnose. The problem with your analogy is there are physical attributes/tests that tell doctors what

I'm not saying that we're, by any means, qualified to self diagnose. The problem with your analogy is there are physical attributes/tests that tell doctors what is wrong when dealing with physiological problems. Even when the methods rely on us telling the doctors, it's usually a binary choice. On the other hand, it gets a lot more subjective when it comes to mental health.