I learned a lesson watching "What not to wear." A fashion show about people dressing so badly it would hinder their career.

The "contestant" reason was always that no matter what they would be wearing people should judge them from "what's inside."

Well, though luck, people don't do that. They judge you by what you wear, how you stand, how you talk and there is nothing you can do about it.

Sure you can continue pretending you have bad manner because you're introvert, but don't expect the rest of the world to understand and adapt to your peculiarity.

That's when I stopped blaming the rest of the world for how it worked, improved my social skills and moved on with my life.