Research conducted at the University of North Carolina and the University of California, Los Angeles, gave 80 healthy volunteers and an assessment to study the impacts of two different types of happiness. Researchers then took blood samples to analyze the subject's white blood cells. The findings suggest your genes can tell the difference between a purpose driven life connected to serving others and a shallower more self-centered one. And, your genetic responses occur even if your self-awareness cannot distinguish between the two.