In: Anatomy and Physiology
The essence of our human nature is:
Happiness
The Will To Life
Pain and distress
Love and Kindness
The Will To Kill
The essence of our human nature is: Happiness
Essence is fixed and unchanged.
All the people seeking pleasure, wealth, and a good reputation. But while each of these has some value, none of them can occupy the place of the chief good for which humanity should aim. To be an ultimate end, an act must be self-sufficient and final, "that which is always desirable in itself and never for the sake of something else" and it must be attainable by man. Human nature depends on “in which the person can gain happiness”. Whatever is the desire the ultimate goal is happiness. Everyone would agree that happiness is the end goal for all the actions done. It is easy enough to see that we desire money, pleasure, and honor only because we believe that these goods will make us happy. It seems that all other goods are a means towards obtaining happiness, while happiness is always an end in itself.
Happiness is a final end or goal that encompasses the totality of one's life. It is not something that can be gained or lost in a few hours, like pleasurable sensations. It is more like the ultimate value of our life as lived up to this moment, measuring how well you have lived up to your full potential as a human being.
Humans are like all animals and react to circumstances. If there was no threat and plenty of food, humans behave nicely with each other (because they were happy). If there is starvation of food or there is competition for shelter, then humans become unhappy and for survival they will even kill other humans.
Mainly two categories of people exists in the world: The first one is achievers - they might love to run a successful business, politics, sports, etc, the final goal of all these desires is happiness. The second category is enjoyers, they love to enjoy the life in different ways like spending time with family, watching movie, reading stories, etc, but the ultimate goal is happiness.