Dear Shubhadip, Being introverted or extroverted is a natural personality trait. Therefore, there is no need to change it forcefully. There is no evidence that shows extroverts have an edge over introverts. You may be introverted, but do not be inscrutable.
Scientific Validation of Introversion
Secondly, have you taken any scientific psychological test that showed you are introverted? Who has verified the validity, reliability, and credibility of the test?
Feedback and Networking Skills
Thirdly, if someone has given feedback that you are introverted, then you may develop better networking skills. Leaders demonstrate outspokenness. Their communication is characterized by directness in manner or speech. Therefore, be communicative. When I recommend you to be communicative, please note that I do not mean to say you need to improve communication skills. You may have good communication skills, but what is the use of those skills if a person does not use them? Communicativeness demands being proactive and responding to communication in a timely manner.
Meaningful Communication
Fourthly, please do not mistake outspokenness with talkativeness. Chatterboxes can be introverts too. What we communicate should be meaningful, to the point, and with supporting examples. To make your communication meaningful, improve your listening skills as well as questioning skills. In fact, if you ask questions, people will be forced to reply. Please note that people like those who listen to them! Listening to others does not mean accepting another person's views. Do not contradict or come up with a counter-argument instantly. Put your opposing views without offending the other party.
Avoiding Terseness
The next thing is not being stingy with words. Many people prefer to communicate tersely. However, terseness mars the spirit of their communication.
Enhancing Confidence Through Reading
Lastly, people become introverted because they have nothing to say. Therefore, improve your reading. Read editorials and center-page essays of the newspaper. Discuss the contents with your friends and family members. This will improve your confidence.
All the best!
Dinesh Divekar