You will have an individual way of viewing and understanding your reality.  This view initially derives from your unique genetics, and later is modified by unique life experiences.

You depend on your observations, as well as the observations of others to building an understanding (or model) of reality.  You use this model of reality to navigate your movement through the world.  Different societies often try to to promote their own models of reality onto you.

Your behavior/personality is half based on your biology and half on your environment & experiences.

You are in fact not just a single entity but a entity that is built from many different systems and smaller entities.  Your are conscious of only a limited amount of the important processes going on in your body that sustain your life, move you forward, and push you to do certain actions. Often you do actions without even being aware of why you are doing them or feeling them, and then your ‘conscious’ mind tries to justify these decisions after the fact.

Why do you do what you do?
You’re body is motivated by several drives.  Most of these drives (even those imposed and you by society) are usually then rooted on some core biological drives.  Your body has built-in reward/punishment systems that regulate these drives, but these system can be hijacked by other factors that distort you drive satisfaction.

Because everybody’s genetics is slightly different, it means we each have a different type of settings for our drive satisfaction.  (aka Everyone has as different drive profile).  So everyone will have different desires. These desires or drives are not “wrong” or “right”, they just exist.

The smart long-term optimizing satisfaction of these drives is the goal of life for any individual.