You want that capability to separate yourself from thoughts that are intrusive or that you don't wanna think. I like the metaphor of sticky thoughts. Oftentimes, thoughts that aren't good for us drive us. But what we really want is to be able to snap out of them and identify them for what they are. Meditating is just learning to notice things that go on inside your head or around you. You're training your nervous system. See https://rightasrain.uwmedicine.org/mind/well-being/science-b... or any other hit on google for "meditation parasympathetic nervous system". You're learning to regulate yourself basically.