Tripartite Structure of the Soul

Plato believed that the human mind/soul is made up Reason, Passion (emotions and mental needs and wants), and Appetite (bodily needs and wants), which I think is fair division of the human soul.  Overall, this subject of the human mind is about where I only fully agree with Plato on.  It's important to ensure that no single triat of our conscience rules us.  Complete Reason would bring us to a world of bored yet safe automatons.  Complete Passion would lead to anarchy and Complete Appetite would lead to obese, drunk, high behemoths.  So its necessary that Reason keeps the other two in check, so if we wanted to go skydiving, we would do it safely and smartly.  It works out well when someone uses reason to make decisions about passion or appetite.  For example: You may want to binge eat chocolate, but that would be unhealthy and leave you feeling sick later.  It might be a better idea to save your money and go on a trip to Europe.