I am not an introvert but I love and respect a great many people who are. I wish more people would understand what it means to be an introvert - maybe you are and you don't even realise. Introversion does not equal shyness.
to quote my friend Cory "A lot of people think that introvert = shy. Actually, studies show introverts may not be very shy, but they get energy from their alone time; extroverts get re-energized by being with people.