I feel like a lot of very goal oriented people never get to the intrinsic value part, which is where the real purpose in life is. If you are always doing something in order to get something else, you are going to feel like you are on a treadmill. You have to eventually arrive at something you find intrinsically valuable.
Personally, I find a whole lot of things intrinsically valuable, which is probably why I am such a genuinely happy person.
A big part of happiness is enjoying what you have. On the other hand, happiness doesn't really matter all that much. It's only a goal if you don't know how to achieve it. Once you figure it out, you move onto some other goal until you become unhappy chasing that one.