Close your eyes and try thinking about nothing: what happens?
It’s counter-intuitive, but awake or asleep our brains are driven to be doing something. It’s a surprise to most people to realize how little control they have over their own minds, an observation which may explain why the behavior of people on this planet, and our own behavior, is so frustrating.
Meditation is one way to learn to control one’s own mind better, a skill that would seem to be more important than most people consider it. If you can’t control your own mind, you are lost. Or perhaps you disagree?