Introverts are simply people who avoid speaking unnecessarily and coming into limelight. They are neither depressed nor against the society but love to stay self-sufficient in their limited world full of close people. They maintain a cool, calm and focussed stance towards the entire world.
Limited social Expression: they neither like to be loud not party too much with people flowing from all directions. They dont like to be made to feel too special as they are self sufficient and like to be with their own limited circle. They dont like to blow trumpets of their success or failures.
Concentrating on limited people and friends: they dont just inculcate anyone to their lives and respect their right to privacy. They dont spend energy uselessly but like limited conversations and end up attracting a lot of extroverts. They give their best efforts in limited relations and dedicate tot he ones they love. They take time to mingle and choose their friends very consciously. They confine themselves to limited people and do all activities with them only. Their concentration is on quality than quantity.
Avoiding Congregations: They feel tired and irritated interacting with others and exchanging energies with people. Too much social presence seems to ask for efforts and struggle to make right impressions. Introverts can always do it it but never overdo it. They appreciate honesty and righteousness. They dont like interfarence in their personal issues.
More written expression: introverts are more of thinkers, visionaries; believe in theories. They like more of writing in the form of diary entries, journals, poems, stories, plays etc.
Solitude lovers with capacity and manners: by knowing introverts you will realize that neither they are shy nor rude but limit their lives in and around a little, safe and secure shell. They are less manipulative, artificial while more concentrated towards solitude which provides them opportunity for comprehensive study, experimenting and thinking. Their life works in their brain and indulges in creativity.
It is easy to shift from introversion to extroversion and vice-versa depending on one's choice.