introvert

sometimes I think I’m an ambivert instead of an introvert, and then I do things like ordering fast food to go and then leaving to eat it in my car because the fast food place was empty and I didn’t want to be alone in there with the workers

Introverts may have strong social skills and enjoy parties and business meetings, but after a while wish they were home in their pajamas. They prefer to devote their social energies to close friends, colleagues, and family. They listen more than they talk, think before they speak, and often feel as if they express themselves better in writing than in conversation. They tend to dislike conflict. Many have a horror of small talk, but enjoy deep discussions.
—  Susan Cain