Because it doesn’t work.
The mind responds to whatever stimulus is put in front of it.
Trying to keep it in one place is an exercise in futility.
Even when I try to “focus on the breath”, I don’t try to focus on anything. It’s just a suggestion, an intention.
It disappears as soon as it appears.
It comes and goes, like everything else.
So, if you’re saying “I can’t meditate because I can’t focus”, that’s just an excuse not to meditate.
Let it come and go, like everything else.
Then, keep meditating.
In the No Problem, you’ll learn how to let things come and go without insisting they perform to your specifications.
If you don’t know how to do this, you must be going crazy right about now.