Productivity is mostly additive in the advice ecosystem — new tools, new routines, new systems. The subtractive version is usually more effective and always cheaper. Nine habits whose removal produces disproportionate gain.

1. Checking email first thing

Hands the day's agenda to whoever sent you the most recent email. Do your first important task before email; check email twice later.

2. Leaving notifications on

Notifications are a running tax on attention. Fixed cost, no opt-out once they're on. Turn them off for everything except humans you specifically want interrupting you.

3. Saying yes reflexively

Every yes is a no to something else you just can't see yet. Default to "I need to think about it."

4. Multitasking

Not a real thing. You're context-switching, which is ~20 minutes of tax per switch. Close three windows.

5. Scrolling while idle

The five-minute scroll between meetings destroys the pre-meeting warm-up and the post-meeting processing. Walk instead. Look out a window. Anything but scroll.

6. Unplanned afternoons

Morning-you set the day up. Afternoon-you without a plan defaults to reactive work. Write the afternoon priorities in the morning; the decisions survive low-energy hours better.

7. Working tired

Pushing through exhaustion produces bad work and more exhaustion. Real rest — 20 minutes, a walk, a nap — pays back within the same afternoon.

8. Taking every meeting

Half the meetings you take could be an email. A third of email could be a document. A quarter of documents could just be not-sent.

9. Postponing hard conversations

The avoided conversation costs more energy over a week than the conversation itself would. Have it. The relief alone pays back the discomfort within hours.

Nine habits to subtract. Each one is a productivity gain without installing anything. Remove three this month; notice the difference.