Coplan’s careful use of the phrase “level of shyness” is a good reminder that introversion and extroversion are not diametrically opposed in black and white fashion; and in any case, people’s personalities shift depending on the time and situation. As Jill Burruss and Lisa Kaenzig explained in their paper for the College of William and Mary, “Most people utilize both introversion and extraversion in their daily lives … no one list [of personality traits] adequately captures the uniqueness of any individual, but serves as a beginning guide to recognizing and understanding behaviors.” And in many cases, people have similar needs: While writing about an introvert’s need for solitude, Spencer conceded, “I think everyone can benefit from the lack of social distractions.”

Teacher Burnout Is More Likely Among Introverts – The Atlantic

ongoing efforts as self-awareness. I fall toward the introverted end of the spectrum. I have adopted many behaviors that have given me the ability to succeed in a land of extroverts.