9 Terrible Habits You Need to Stop to Increase Productivity

Productivity advice is additive by nature: new frameworks, new tools, new morning routines. The subtractive approach is rarer and often more effective. Nine habits whose removal produces disproportionate gains — each backed by specific research on the mechanism of harm and the benefit of stopping. None require a subscription or a new system.

1. Checking email first thing in the morning

Starting the day in email means handing the morning's agenda to whoever sent you the most recent message. The first working hour is, for most people, the period of highest cognitive quality: dopamine, norepinephrine, and cortisol align to produce alertness, focused attention, and the executive capacity for difficult decisions. Consuming email at this point converts your best cognitive window into reactive work — responding to other people's priorities rather than advancing your own.

The practical alternative: do your single most important task — the one requiring your best judgment or your most difficult creative effort — before opening email. Then check email at two designated windows (late morning and mid-afternoon works for most knowledge workers) rather than continuously throughout the day. The adjustment feels awkward for approximately two weeks and produces a reliably different output quality within a month.

2. Leaving notifications on

A notification is a pre-committed interruption. Every interruption carries a cost that extends beyond the moment of interruption itself. Research by Sophie Leroy, published in Organizational Behavior and Human Decision Processes (2009), identified what she called "attention residue": the continued partial cognitive engagement with an unfinished or interrupted task that persists after you consciously return to the current one. Switching to a new task before fully completing the previous one leaves a cognitive footprint that reduces working memory available for the new task and measurably degrades performance on it. A notification produces this effect every time it fires.

The fix is at the hardware level: turn off notifications for every application except the specific people you want to be able to interrupt you in real time. The cost is occasionally missing something; the benefit is being available to do the work that most requires sustained attention — which is almost always the work that matters most.

3. Saying yes reflexively

Every reflexive yes to a commitment you didn't actually want is a no to something you did want — a no that is invisible at the moment of agreeing and visible only weeks later when the commitment arrives. The inability to decline is partly a social reflex (declining feels rude) and partly temporal — the downstream cost of the new commitment is invisible in the moment of saying yes, while the social friction of declining is immediate.

A 2007 meta-analysis of 691 correlations on procrastination, published in Psychological Bulletin (APA), found that task aversiveness is one of its strongest predictors. People procrastinate most reliably on tasks they agreed to but didn't genuinely want to do. The default pause — "I need to check before I commit" — converts an in-the-moment social reflex into a deliberate decision made when you can actually see the cost. It is both honest and effective.

4. Multitasking

Multitasking on complex tasks is not a learnable skill — it is rapid context-switching, which carries measurable costs at every switch. Research by Rogers and Monsell, published in the Journal of Experimental Psychology: Human Perception and Performance (2001), found that switching between tasks imposes time costs that grow proportionally with task complexity, because the brain must disengage one cognitive rule-set and activate another. These "switch costs" accumulate.

At the population level, the effect is consistent and directional. A comprehensive review of 21 reports, published in the Proceedings of the National Academy of Sciences (2018), found that heavy media multitaskers show worse performance on working memory, sustained attention, interference management, and inhibitory control compared to light multitaskers — and the difference is sustained, not temporary. Habitual multitasking does not train the brain to handle multiple streams more efficiently; the evidence runs in the opposite direction. Closing three applications and finishing one thing is not a lifestyle change; it is the most effective single attention intervention available without any equipment.

5. Scrolling during idle time

The five-minute scroll between meetings destroys two cognitively important transitions. The first is pre-meeting preparation: the few minutes before a meeting during which incoming context is processed and questions are formulated. The second is post-meeting consolidation: the period in which decisions crystallise, tasks are recorded, and commitments move from working memory to a reliable system. Scrolling replaces both with a stream of incoming stimulation that leaves attention fragmented rather than reset. The practical alternative is any low-demand, low-stimulation activity: walking a short circuit, sitting without a device, looking out a window. The improvement in meeting quality becomes noticeable within two weeks.

6. Leaving afternoons unplanned

Morning energy determines what is possible. Afternoon energy — which is lower for most people due to post-lunch circadian dynamics — determines what actually happens from a set of pre-specified choices. Most people plan the morning and allow the afternoon to be shaped by whatever arrives: email backlog, colleague interruptions, requests that landed during the day. The result is that afternoon output is largely determined by other people's priorities rather than your own.

Writing afternoon priorities in the morning — specifically naming the two or three tasks you will complete between 2 p.m. and 5 p.m. — allows decisions made at high energy to govern the hours when energy is lower. The decision fatigue research is consistent: the quality of choices declines across a day, and the people who protect their important afternoon work by specifying it in advance outperform those who decide in the moment.

7. Working tired

Pushing through exhaustion produces bad work and more exhaustion. The relationship between sleep debt and performance deterioration is linear and, critically, not accurately perceived by the person experiencing it. Research by Van Dongen and colleagues, published in Sleep (Oxford Academic, 2003), found that 14 days of 6-hour sleep produced neurobehavioural deficits equivalent to two full nights without sleep at all — and that participants remained largely unaware of their escalating impairment. You cannot accurately self-assess how tired you are when you are severely tired; subjective alertness diverges from objective performance as sleep debt accumulates.

A 20-minute rest, a short walk, or a genuine cognitive recovery period within the working day produces measurable performance improvement in the hours following it. This is not a concession to weakness; it is the management of the primary resource — cognitive function — on which everything else in the list depends.

8. Attending every meeting

Meetings are the primary mechanism through which collective decisions are made and also the primary mechanism through which individual deep-work time is consumed. The productive question to ask of each recurring meeting is not "is this meeting useful?" but "is my presence necessary for this specific meeting, this week?" A significant proportion of meetings most people attend do not require them — the output is largely unaffected by their absence, and the information can be captured in five minutes afterward.

An analysis of 9,000 daily diary entries from 177 professionals over seven years, from Amabile and Kramer's The Progress Principle (Harvard Business Review Press, 2011), found that excessive time pressure and reactive schedules consistently suppressed creative output for the majority of workers. The exceptions were people who felt they were on a focused mission — and that feeling was most reliably produced by having chosen their schedule. Meeting attendance treated as a choice (not an assumption) is the structural change that makes deep work blocks possible.

9. Postponing hard conversations

The avoided conversation costs more energy across the days it is avoided than the conversation itself would cost. The mechanism is involuntary rumination: the unresolved problem occupies background attention even when not actively considered, consuming cognitive resources that are then unavailable for present-tense work. Research on procrastination (Steel, Psychological Bulletin, 2007, synthesising 691 correlations) identified the core mechanism as task aversiveness combined with preference for short-term mood relief over long-term outcomes. The hard conversation is aversive; postponing it provides momentary relief; that relief is paid for at accumulating interest across every day until the conversation happens.

The most practical intervention: write down what you want to say before the conversation. The clarity required to write it clearly is the preparation that makes the conversation shorter and less aversive than the version that happens after months of avoidance.

Starting the removal

Each of these nine habits is a productivity cost that runs continuously in the background. Removing them requires no new tools, no new routines, and no new commitments — only the subtraction of what's already there. The largest returns come from habits 4, 5, and 2 (multitasking, scrolling, and notifications), because they directly tax the attention that everything else in your day depends on. Habits 1 and 6 address the scheduling structure — what happens at the beginning and middle of each day.

Remove three this month. The productive complement to this list — what effective practitioners do rather than just what they avoid — is in the unusual habits of successful entrepreneurs. For the lowest-friction positive additions, two-minute habits are the entry point that has the best survival rate through difficult weeks.