The evolutionary imperatives of survival and procreation, and their associated rewards, are driving life as most animals know it. Perhaps uniquely, humans are able to consciously experience these pleasures and even contemplate the elusive prospect of happiness. The advanced human ability to consciously predict and anticipate the outcome of choices and actions confers on our species an evolutionary advantage, but this is a double-edged sword, as John Steinbeck pointed out as he wrote of “the tragic miracle of consciousness” and how our “species is not set, has not jelled, but is still in a state of becoming” (Steinbeck and Ricketts 1941). While consciousness allows us to experience pleasures, desires, and perhaps even happiness, this is always accompanied by the certainty of the end.
Nevertheless, while life may ultimately meet a tragic end, one could argue that if this is as good as it gets, we might as well enjoy the ride and in particular to maximize happiness. Yet, it is also true that for many happiness is a rare companion due to the competing influences of anxiety and depression.
In order to help understand happiness and alleviate the suffering, neuroscientists and psychologists have started to investigate the brain states associated with happiness components and to consider the relation to well-being. While happiness is in principle difficult to define and study, psychologists have made substantial progress in mapping its empirical features, and neuroscientists have made comparable progress in investigating the functional neuroanatomy of pleasure, which contributes importantly to happiness and is central to our sense of well-being.
