Focus and Concentration

The environment most people work and live in is exceptionally hostile to sustained attention. Notifications, open-plan offices, constantly updated feeds, multi-tab browsers, group chats — all of these create conditions where focused attention is consistently interrupted before it can deepen.

The average knowledge worker is interrupted or switches tasks every few minutes. Each switch carries a cognitive cost. Research by Gloria Mark at UC Irvine found that after an interruption, it takes an average of 23 minutes to return to a state of deep focus. If interruptions occur more frequently than that — which for most people they do — deep focus may be a rare or absent state.

Over time, a brain that rarely practises deep focus may find it harder to achieve. Attention, like most cognitive capacities, responds to use.

Multitasking is not a skill — it's a description of what happens when you switch between tasks quickly. The brain cannot genuinely do two cognitive tasks simultaneously. What it does instead is rapidly alternate, with a switching cost each time.

Research consistently shows that people who consider themselves good multitaskers are often the worst at it — because they're least aware of the cognitive cost they're incurring.

Cal Newport's distinction between deep work and shallow work is useful here:

Deep work is cognitively demanding, focused work that produces high value and builds capability. Writing, analysis, complex problem-solving, creative work, learning — these require sustained, uninterrupted attention.

Shallow work is logistical, low-cognitive-demand work: email, scheduling, routine administrative tasks, meetings. It's necessary but doesn't require the same quality of attention.

The problem for most people is that shallow work — particularly email and communication — expands to fill available time and attention, crowding out the focused periods where deep work is possible.

Time blocking

Schedule specific blocks of time for focused work — not just "I'll do deep work when I have time," which never comes. Treat these blocks with the same seriousness as a meeting. During the block, close email, silence notifications, and work on one thing only.

The Pomodoro technique

Work in focused intervals — typically 25 minutes — followed by a short break. The defined endpoint makes it easier to resist distraction ("I just need to get through this 25-minute block"). After four intervals, take a longer break. This structure works because it makes the cost of distraction concrete.

Environmental design

Your environment shapes your behaviour more than your intentions do. A workspace with fewer visual distractions, a phone in another room rather than face-down on the desk, browser extensions that block distracting sites during focus periods — these reduce the friction of staying focused and increase the friction of getting distracted.

Working with your chronotype

Cognitive performance peaks at different times for different people. Most people have a cognitive peak in the late morning, a post-lunch trough, and a secondary peak in the late afternoon. Scheduling your most demanding focused work during your natural peak, and shallow work during your trough, can significantly increase both quality and efficiency.

The body's role in focus

Dehydration, low blood sugar, poor sleep, and physical inactivity all impair concentration. Staying hydrated, eating in a way that maintains stable blood sugar, sleeping adequately, and moving regularly are foundational to sustained attention — and they're often addressed last because they feel less urgent than the task in front of you.

Persistent difficulty concentrating — particularly when accompanied by fatigue, mood changes, or the sense that your brain isn't working the way it used to — can sometimes indicate something worth investigating: sleep disorders, thyroid issues, iron deficiency, depression, or ADHD. If focus difficulties are significant and not resolved by environmental or lifestyle changes, it's worth raising with a doctor.

ADHD in particular is significantly underdiagnosed in adults. Many people who have struggled with focus their whole lives assume it's a personality trait rather than a neurological one.

• Identify your peak focus time and protect it. Block it in your calendar and treat it as non-negotiable.
• Tomorrow, try one 25-minute focused work session with your phone in another room and all notifications off. Notice what the experience is like.
• Count how many times you check email or messages in a typical hour. Consider whether you could batch this to two or three times a day instead.

Not medical advice. If you have persistent concentration difficulties that significantly affect your daily functioning, please speak with a healthcare professional.