Re: Narcissism may be the cause of depression.
What you wrote is interesting, but I think it may help more perhaps to turn the critical eye upon ourselves rather than others. I suffer from the same problem you do in conversations, but I'm beginning to wonder if perhaps it's because I'm a narcissist. Why is it always about me? Clearly it's unrealistic to believe that everyone we interact with is a narcissist, so if so many people are having an unfavorable reaction, maybe it is us who are caught up in overanalyzing and personalizing things that probably have nothing to do with us.
As you stated, narcissism can be thought of as a cause underlying much depression and anxiety. Also, narcissism can result in a feeling of paranoia - which also seems to fit (at least me) to a tee, always believing others are silently critical of me, or interpreting their body language as a rejection of me. I know you've probably heard the old cliche, "I'm okay, it's the rest of the world that's sick." Now honestly, what are the odds of that? Maybe we need to relax and then people will relax around us.