How do I apply the idea that remove what does not serve the current function?

The most direct way to practice is through a focused exercise: Choose one workspace — physical or digital — that you use for your most important cognitive work. Set a timer for ten minutes and conduct a removal audit. For every object on your desk, every icon on your desktop, every pinned tab in your browser, every app on your phone home screen, ask a single question: did I use this in my last three work sessions for the function I am performing right now? If the answer is no, remove it from the active workspace. Physical items go into a box or a drawer — not the trash, just out of sight. Digital items get moved to a folder, unpinned, or closed. When the ten minutes are up, work for one full session in the reduced environment and note what you experience. Do you reach for something that is gone? That item might belong. Do you not notice an absence? That item was only costing you attention.

Common pitfall: The most common failure mode is sentimental retention — keeping objects in your workspace because they represent identity, aspiration, or emotional connection rather than because they serve the current function. The stack of books you intend to read "someday" stays on the desk because removing it feels like abandoning the aspiration. The framed certificate stays on the wall because it validates your competence, not because it aids your current task. The decorative object from a trip stays visible because it sparks a pleasant memory. None of these are wrong to own. All of them are wrong to place in a workspace optimized for focused cognitive work, because each one diverts a thread of attention from the task at hand. The endowment effect compounds this — you overvalue what you already have in your space, making removal feel like loss rather than liberation.

This practice connects to Phase 47 (Environment Design) — building it as a repeatable habit compounds over time.