Bhagavad Gita, Chapter 6, Verse 10

The Yogi should constantly practise concentration of the heart, retiring into solitude, alone, with the mind and body subdued, and free from hope and possession.

Real focus, especially early on, tends to need real space away from the usual noise and clutter.

This is practical, not just philosophical. Consistently stepping away from distraction and accumulation is described as a genuine, necessary part of the discipline, not an optional extra for the especially devoted.