Doing ourselves no favours

While I have no data on this, my impression is that the average person takes a somewhat fundamentalist or absolutist view on morality, by which I mean that they subscribe – in theory, if not in practice – to a core set of fundamental or foundational principles, where “being good” is a matter of maximising their adherence to those principles. This may however be a mistake, and furthermore, a mistake that can result not only in decreased happiness for the person herself, but also in their incurring increased harms on others.