Shy and Lovable

On May 25, 2020, Writeforfun wrote, Any suggestions for writing lovable introverts?

I am struggling with one of my main characters in my story, the only one who is an introvert. I love writing him because he’s basically me when I was his age, so it comes so easily! He is petrified of attention, introspects constantly and has a little too much imagination, has profound thoughts but has a hard time putting them into words, reads constantly, is a very good listener, is extremely self-conscious, ...