Shyness is inherently uncomfortable; introversion is not. The traits do overlap, though psychologists debate to what degree.

Many introverts feel there's something wrong with them, and try to pass as extroverts. But whenever you try to pass as something you're not, you lose a part of yourself along the way. You especially lose a sense of how to spend your time.

In our society, the ideal self is bold, gregarious, and comfortable in the spotlight. We like to think that we value individuality, but mostly we admire the type of individual who's comfortable 'putting himself out there.'

Susan Cain Quotes