Personality

Aristotle has four categories of personality: Sanguine, Phlegmatic, Choleric, and Melancholy

basically the distinctions are on two points: Happiness and Leadership

Happy and Leader: Choleric Happy and Follower: Sanguine

Unhappy and Leader: Melancholic Unhappy and Follower: Phlegmatic

But I understand there are 16 personality types and you can take the test free online (just search 'personality test')

Personality is the method(s) one has in life