Socrates instructed his students to seek to understand themselves before trying to understand others. Later, Aristotle identified separate personality styles that he believed determine human behavior. All of us are driven by an internal guidance system that affects how we react in social settings, who we prefer as friends, what we do when we’re under stress, and how we approach tasks. Your behavior style determines your preference to: take charge or allow others to have control; dig into details or focus on the big picture; want to be center of attention or let others have the spotlight; love change or hate it … and much more.