Taking Hypothetical Essay and Running with it

What helps us choose actions both hypothetical and real to be categorized between the right and the wrong?  Some claim that it's inherent within something called "human nature" or that it's placed within us by power outside this universe. Should each of us, being the ethical conscious subjects we are, consider these possibilities? If some of us prefer accepting simplicity as answers to surroundings, then yes, by all means this shall constitute reasons which will satisfy them. But to all the rest, proper evaluation through past examinations will help further our hypothesis. Firstly, to judge the highest value for the self as constituting moral rightness; or communitarian point of morality based on the good for all determining the value of right; lastly, the Kantian duty presenting the true sense of moral purity.