Recent experiments indicate that most contemporary built environments are no longer conducive to the state of enjoyment of life — commonly called happiness — that is necessary for human health and well-being. Standard design practices in place for decades are responsible for this grave deficiency. Yet the pursuit of happiness as emotional feedback from buildings and cities is an unalienable right of all people. A healing environment depends upon biophilia — the body’s positive response to biological forms, and to their mathematical representation. Eye-tracking, neuroscience, and visual attention software discredit building and urban typologies that provoke disturbing neural responses. Those same diagnostic tools help us to design a healing environment. A new design toolkit that focuses on happiness and well-being combines the visual mathematics of living structure with the patterns of Christopher Alexander.