By the time you will finish reading this document, at least two people 25-years or younger, somewhere in the world, including New Zealand, will have taken their lives; it is equally likely that at this very moment, someone somewhere in the world, deluded and dissatisfied with the state of existence as is, about to train a gun or activate an explosive device, or use a weapon to commit murder (citations??). Available evidence suggests depression or dissatisfied mental health condition resulting in some form of 'lack of a state of happiness' is a risk factor for suicide (citations??). It therefore follows that if an 'unhappy' state of mind is a risk factor for suicide and homicide, then increasing the "level of a state of happiness" in individuals or societies may lead to reduction in suicide and homicide risks; it will also let people live 'happier lives'. In turn, this implies that happiness is measurable construct; happiness has a uniform metric, and that, such measurement along a scale will lend itself usable for interventions.