Why do goals feel so hollow in the end?

What are we to take from this ever present constant? The knowledge that to actually achieve our goals leaves us feeling empty, and hollow, bereft of direction, and losing our cause. Are we then to acknowledge that it is the pursuit of, and not the attainment of said goal that really fills us up with purpose, drive, and the get up & go to move through our days? Probably why all those wise folks said a journey of a thousand miles begins with the first step. Right there, that’s as good as it gets. To set the course and follow it. Not to cross the finish line, and look back. Though, to finalize a project can take a load off your shoulders, certainly, but the real fact of the matter is, doing the thing, living the doing, is better than being done. That just leaves you adrift, well, until you find a new goal and set off on that path too. The treasures were the friends you made along the way. That sort of glib, pat phrase, really does have a kernel of truth to it. If you are hyper focused, you probably fought, or clashed with others on your path, instead of building relationships with people with similar interests and talents. Bummer dude. Self reliance kept many people at arms length. But that’s a whole other kettle of fish.