This is one of those days when I feel like hiding under my desk because the world outside seems so scary. But let's try cheering you up instead.
First, some cheering up.
Now, get back to work.
This is great advice for managers, and in fact, all workers. If I had to choose just one, I'd wish everyone would follow #2.
Being a proud introvert myself, I loved this article on introverts. Read this to recognize yourself, but especially read this if you're an extrovert: we need you to understand us better! If you're an introvert, do read my tips on networking!
While on introversion, I also loved this question, since I can relate so much to the letter-writer.