The modern workplace is an interruption machine. A message, a tap on the shoulder, a "quick question" that isn't — each one seems trivial, and collectively they shred the deep work that actually moves things forward. The cost isn't the two minutes the interruption takes; it's the fifteen to twenty minutes it takes to rebuild the mental context you had before it landed. Interruptions are expensive in a currency nobody's tracking.
The real cost is the re-entry, not the exchange
When someone breaks your focus, you don't just lose the interruption's duration — you lose the loaded state you'd built up: the variables held in your head, the thread of the argument, the where was I. Rebuilding that is slow and invisible, which is why a day of "just quick things" leaves you exhausted with nothing finished. Understanding this is the whole foundation: you're not protecting minutes, you're protecting the costly, fragile state that makes real work possible.
Batch your own interrupting
Before managing how others interrupt you, stop interrupting yourself. Checking email and chat reactively — every time a notification twitches — is self-inflicted fragmentation, and it's usually the larger share of the problem. Process messages in a few deliberate passes a day rather than continuously. Pull the small tasks that accumulate into one list — a running board like Axtio where each lands as a card — so an incoming request becomes a captured item to handle in your next batch, not a reason to abandon what you're doing right now.
Make your focus state legible to others
People interrupt more when they can't tell you're deep in something — from the outside, staring at a screen looks identical whether you're in flow or idle. Give the signal: a status, headphones, a blocked calendar, a simple team norm that a certain sign means "async unless it's on fire." Most interruptions aren't urgent; they're just convenient for the interrupter, and a visible "not now" reroutes the convenient ones to a channel that doesn't cost you your context. You're not refusing to help — you're moving the help to a moment that doesn't detonate your morning.
Capture, don't chase
The insidious thing about your own interrupting thoughts — "oh, I need to email Sam," "did I book that room?" — is that they're often internal. A thought surfaces, and if you chase it you've broken your own focus more thoroughly than any colleague could. The counter is a capture habit: the instant a stray to-do pops up, write it somewhere trusted and return to the work. The thought was demanding attention only because your brain feared forgetting it; once it's safely on a list, the pull vanishes and the loop closes without a context switch.
Not every interruption should be resisted
A caveat that keeps this from becoming precious: some interruptions are the job. The colleague who's genuinely blocked, the fire that's actually a fire, the report that needs you now — treating every interruption as an enemy of focus makes you the unhelpful person nobody can reach when it matters. The goal isn't a fortress; it's discernment. Protect focus fiercely for the deep work, stay reachable for the real emergencies, and get good at telling the difference — because a focus discipline that costs you your responsiveness has solved one problem by creating a worse one.
