How to help your introvert teenager? 

1. Respect their need for alone time

2. Encourage them to participate in activities they enjoy

3. Let them take the lead in social situation

4. Teach them social skills and how to initiate conversations

5. Don't force them to be someone they're not

6. Listen to them without judgment

7. Support their interests and passions

8. Help them find a balance between alone time and social interaction

9. Communicate openly and honestly with them

10. Celebrate their strengths and help them overcome their weaknesses.