Do one thing at a time, and count the switches
There is no multitasking. There is only switching, and it charges a fee each time.
Do this
Work in single-task blocks with notifications off and other tabs closed. Batch messages into set times rather than responding continuously. When you catch yourself switching, note it rather than judging it - the count is the useful data.
Why it works
Task switching carries measurable costs in time and errors, demonstrated consistently since the 1990s. Interruption studies in real offices find substantial recovery time before full re-engagement, and self-interruption is roughly as frequent as external interruption.
Where it fails
Some work genuinely is reactive and cannot be batched. Rigid focus blocks also fail against jobs with real-time obligations, and long uninterrupted stretches are not always available or even necessary for shallow tasks.
How you’ll know
Time one representative task under both conditions. The difference is usually larger than people expect and larger than it feels.