Gustav The habit, in one sentence: block long, uninterrupted stretches for the work that creates real value, and guard them as fiercely as you would a client meeting.
Why it matters
There are two kinds of work. The kind that creates value, building the product, designing the solution, writing the proposal that wins the deal, and the kind that just fills the day, email, messages, small admin. The second kind feels productive because it never stops moving. But a business is built almost entirely by the first kind.
The problem is that deep work needs runway. You cannot solve a hard problem in seven-minute slices between notifications. Every interruption costs you not just the minute it takes, but the ten minutes it takes to climb back into focus. A day chopped into fragments can feel exhausting and still produce nothing that matters.
What it looks like in practice
Most of my real output, the systems, the automation, the things clients actually pay for, happens in a few protected hours where nothing else is allowed in. When those hours get eaten by a pinging phone and a full inbox, the day disappears and the important thing is still not done. When I ring-fence the morning for one hard task and let the world wait, I get more done before lunch than I used to in a whole scattered day.
How to build the habit
Block two to three hours for one task, and put it in the calendar like an appointment, because it is one. Phone in another room, notifications off, one tab, one job. Decide the night before what the block is for, so you start instead of deciding.
Then batch the shallow work. Email and messages do not need a running response all day; they need a window, once or twice, where you clear them and close them. The world will cope with a few hours of your silence far better than your business will cope with you never focusing.
The pitfall to avoid
Do not mistake being busy for doing the work. Answering messages all day feels like effort and produces the comforting illusion of progress, but it is mostly motion, not output. The other trap is scheduling deep work into hours when you have no energy left, focus is a function of state, not just time, which is exactly why this habit and managing your energy go together.