Here are four pieces of advice. The best way to think about morality is as a cultural tool that we humans invented to help us live and work together in social situations. Some of us justify these facts by appealing to commandments delivered to us by some divine being.
In Brave New World, Huxley shows contempt for the human emotion of love. Also, the problems that morality is trying to solve vary from one place to the next.
It directs moral discourse towards proving other people wrong, or bending them to our moral views. Others justify it by appealing to natural rights, or fundamental facts about human nature, such as that suffering is intrinsically bad so we should prevent it wherever possible. But often our interests, or means of satisfying them, conflict with others.
Indeed, in research with another group of colleagues, we found that people appreciate qualities such as intelligence and sociability more in people who are morally upright, but they actually prefer someone to be less competent when the person is thought to be morally corrupt.
This is the way many of us tend to think and talk about many moral issues, not just murder. The wisdom emerging from research is that we all want to see ourselves as ethical people, yet at times we succumb to temptation and behave unethically.
That if only people were more motivated to behave ethically, if only they made morality more prominent in their thinking, then the world would be a better place.