Economics and happiness

I need some help with this question:

A traditional definition in economics is that Economics is the "efficient utilization of limited productive resources for the purpose of attaining maximum satisfaction of human material wants."  That is, we try to wisely/effectively use our scarce resources (land, labor, capital, entrepreneurship) to produce output (goods and services) in order to attain the highest level of satisfaction (happiness, utility, pleasure, etc.)

In 1963, several months before he was assassinated, a White House reporter ask then President John F. Kennedy what would make him happy.  Kennedy replied, I rely on the old Greek proverb, "Happiness is the full utilization of your capacities along lines of excellence."

To what extent are these definitions of economics and happiness similar?  To what extent are they different?