I am sorry that you are feeling so alone, Madridista.

I believe that many of us who are depressed would fall into the category of "introverts" on the Myers-Briggs personality index. Although some of us are a bit shy, others of us are not. What really distinguishes an introvert from an extrovert is where we get our energy from.

[i]Extroverts[/] are energized by being with others. Introverts are nourished by going inward, by spending time in a world of ideas and concepts, by reflection, etc.

Most of the world is extroverts -- over 80% My sense is that we introverts look out and say, "I wish I could be like other people, always out, having a good time with friends."

Yet, too much time with others can be disconcerting for us.

OTOH, my sense is that extroverts look at us introverts and think, "Gosh, why is s/he so strange?"

That alone is isolating.

I have no research to support this idea.