How Does One Determine The Difference Between Right And Wrong?

I got given a topic by someone I know to write about 'How do you tell the difference between right and wrong' and so with the topic I wrote about it and I put my own input into the topic as I believe it is not as black and white as it seems. So after writing it, I thought why not share it with the world? I'm interested to see what you guys think of my opinion of the topic 'How do you tell the difference between right and wrong.'