I like the quote, and I suppose it's true, but I wonder where the idea came from that happiness is the end goal? In the Christian mythos, to which I subscribe, there is a distinction between happiness, which is fleeting, and joy. Joy is an inward-outward expression of the work God does in our lives through Jesus Christ. I like that concept.
Happy holidays!
Happiness or absolute joy is never the end goal, Happiness/joy is a state of being! Be happy, be joyful and the rest will fall into place and life will flow easily!