Enemies of human beings are anger, greed, envy, lust, hatred and pride.
These negative emotions exist within the subconscious mind of all humans and cannot be completely eradicated. That is why Hinduism has the concept of Sur (Gods) and Asur (Demons). Both God and Demon is within us.
Only way to subdue these negative emotions is by cultivating pure unselfish love for all living beings.
Also when we realize through true knowledge that happiness does not reside outside we are filled with peace and joy. It such a mind there is no space for any kind of negative emotions.
Cultivate love from a very early age as it will be an inner motivator for goodness and it will also keep out negative emotions.