What does it mean that attention training through meditation?

Meditation is direct practice at noticing where attention goes and redirecting it.

Example: A data engineer starts each morning with twelve minutes of focused-attention meditation before opening his laptop. He sits in a chair with his eyes closed, places his attention on the sensation of breathing at the nostrils, and waits. Within seconds, his mind drifts to the migration script he needs to finish, the Slack message he forgot to answer, a conversation from the night before. Each time he notices the drift, he returns to the breath. On an average morning he counts between forty and sixty redirections in twelve minutes. He used to interpret those redirections as failure — proof that he was bad at meditating. Now he understands that each redirection is one repetition of the skill he is training: noticing where attention has gone and choosing where to place it next. After six months of this practice, the change is not that his mind stopped wandering during meditation. It is that he notices wandering earlier during the rest of his day. He catches himself mid-scroll, mid-tangent, mid-distraction — and redirects. The gap between losing attention and recovering it has shortened from minutes to seconds. The twelve minutes of meditation did not give him more attention. They gave him faster access to the attention he already had.

Try this: Run a focused-attention session right now — no app required, no prior experience necessary. Set a timer for ten minutes. Sit in any position where your spine is upright and you will not fall asleep. Close your eyes or soften your gaze toward the floor. Choose one anchor: the sensation of air entering and leaving your nostrils, or the rise and fall of your chest. Place your full attention on that anchor. When you notice your attention has moved — and it will, within seconds — do three things: (1) mentally note what pulled you away (a thought, a sound, a physical sensation, a plan), (2) release it without judgment, and (3) return to the anchor. Keep a finger-count tally of how many times you redirect. After the timer sounds, record two numbers in your capture system: total redirections and approximate average time before you noticed each drift. Repeat this daily for seven consecutive days, recording the same two numbers. What you are looking for is not fewer wanderings — that comes much later — but faster noticing. If your average detection time drops over the seven days, your attention training is working.