Normally we do things for a purpose, for instance, we walk to go somewhere, by contrast we do a walking meditation, not to go somewhere eternally but to do somewhere internally. So meditation is about letting go of purpose, and embracing no purpose.
For a purposeful people we find this hard to do, so to persuade us to meditate we tell beautiful lies, such as it will help you do your work, have better relationships, improve your health, help you worship your God, help you study, and help you in sport. Of course meditation will do no such thing, the only honest and sensible thing is to meditate for its own sake, not for an external purpose.
So you might ask, why meditate? And the answer is there is no reason to meditate.
Meditation separates the sheep from the goats, the goats are constantly trying to meditate, and are far better off doing what they want to do, while the sheep give up trying entirely.