Are you an extrovert or an introvert? In case you aren't familiar, someone's place on the spectrum of extroversion and introversion depends on how much that person prefers the company of other people -- and his or her preference as to "natural" social setting.
Related: Why Introverts May Be Better at Business Than Extroverts.
Extroverts tend to feel energized being surrounded by others, at parties and networking events, while introverts feel recharged when they're alone, or in the company of a select few people.