Theres something called the "human ego" and one of the final lessons is to conquer it. It is one of the hardest things to do.
Yours, and everyone elses true core being is only capable of expressing Love for everyone and everything unconditionally. Its called your "higher self". The human ego will constantly try to take away from this "higher self" and lead you toward doing evil. Which sadly is what alot of people have aloud it to do. It is much easier to let this force take a hold of you then to put a stop to it.
Think about it. The only way things exist on this planet is through Love. Without Love, there is destruction, disease and ultimately dealth. With Love there is birth, growth, healing, and life. With love there is happiness. Why do you think so many people cant find happiness through themselves and spend their whole life seeking to find another person, thinking that their happiness will be fullfilled? You shouldn't have to rely on anything but you and your knowing to be happy. It comes through hard work, but is worth every effort you make. You will be freed from yourself and all the greed, fear, worries, negetive thoughts/feelings etc.. you experience on an everyday basis. You will be selfless. You dont even fear dealth. Your awareness is stronger than ever. Life is flowing through you every second so strong your skin glows with radiance. You are willing to give your own self for the life of another. I've experienced this afew times to know what I'm talking about. I've read alot on this subject and now know for my self it to be true. It all makes sense when you "get it".
Have you ever heard "only the pure shall see God?" Now you know why so little people have seen God! They have not defeated the human ego, but instead let it defeat them.