"Cada persona asigna su limitada atención ya sea enfocándola intencionalmente como un rayo de energía o difundiéndola en movimientos aleatorios y desganados."

Simplified Meaning:

Everyone has only so much mental energy and focus to use each day. Think of it like a flashlight: you can shine it directly on something, lighting it up clearly, or you can wave it around randomly in all directions, casting only weak, scattered light. When you focus your attention purposefully, like studying for a test or working on a project, you make progress and achieve your goals more effectively. On the other hand, if you let your mind wander from one thing to another without a clear aim, it’s like the scattered light—nothing gets enough attention and you accomplish less. Imagine a student who spends an hour going back and forth between texting friends, watching videos, and reading, without really concentrating on any one of these activities. They end up tired and without learning much. To make the most out of each day, it's better to choose what to focus on and stick with it, like shining a flashlight directly on a path to see clearly where you're going.