One of the most influential approaches in personality science is known as trait psychology, and it aligns you along five dimensions which are normally distributed, and that describe universally held aspects of difference between people. They spell out the acronym OCEAN. So, "O" stands for "open to experience," versus those who are more closed. "C" stands for "conscientiousness," in contrast to those with a more lackadaisical approach to life. "E" -- "extroversion," in contrast to more introverted people. "A" -- "agreeable individuals," in contrast to those decidedly not agreeable. And "N" -- "neurotic individuals," in contrast to those who are more stable.