If you pursue anything, much less "happiness", you will never obtain it.
You are chasing a ghost, something that isn't real.
Your striving will certainly produce something, but you will soon become dissatisfied with your result and be on to the next thing.
...and the next thing...
It seems like an endless quest, eh? Try stopping it and stand still. Stand right where you are now and look around. Take a look at everything around you and you will see so many countless things that you have right now that you might have glanced over while doing the 100m dash into nothingness.
Make yourself your goal and you will never be dissatisfied again.