You blocked the time, put your phone away and sat through the whole block. It didn’t feel like the zone you had hoped for; it felt like work. So was that deep work, or did you do it wrong?
Or the opposite: you had one session where the hours vanished, and you want it back. Here we walk through a single block, from the first restless minutes to the evening. You’ll learn what each part feels like and how to tell whether your block counted.
What does deep work feel like at the start?
The first minutes of deep work often feel worse than the work itself. You’re restless, and everything easier suddenly looks attractive.
That resistance is normal and doesn’t mean you’re doing it wrong. It can feel like you’re fighting with yourself. What you notice usually comes in four forms:
- The pull: you want to check your phone, your email or the chat.
- Other tasks: ideas, errands and to-dos shoot through your mind.
- The silence: without music or noise, the quiet feels uncomfortable. That’s why it works.
- The fake work: an interesting link or a research tangent feels like work, but it isn’t your task.
Wanting to get away from work and being absorbed by it once you’re in can go together. Mihaly Csikszentmihalyi and Judith LeFevre followed 78 workers for one week (Optimal experience in work and leisure, 1989). Most of their flow experiences happened at work, yet they were more motivated in their leisure time than at work.
A timer helps you through this part. Especially with big or unpleasant tasks, it tells your brain the work has an end. You’re not trapped in discomfort forever.
A fixed start ritual shortens the restless phase. After the breathing exercise and the written goal, I become very still, and often I’m in flow right away. That’s my experience, not a promise for your first block.
What does deep work feel like when you’re in it?
Once the restless start is behind you, the outside goes quiet. You stop noticing the clock, the phone and yourself, and the next step is always clear.
Flow research describes the same features. Jeanne Nakamura and Mihaly Csikszentmihalyi list them (The concept of flow, 2002).
They name full concentration, action and awareness merging, a sense of control, and time passing faster. They add a loss of reflective self-consciousness, in which the inner critic goes quiet.
Time can disappear so completely that some people forget to eat and drink. The whole day flies by.
The next step stays clear because it’s on paper. One look at the protocol sheet with your block goal and steps, and you know what you’re doing and why. A stray thought goes on the thought sheet as a keyword, and your head can let it go.
Does deep work always feel like flow?
No, and a clear next step doesn’t guarantee it. Flow is the best case of deep work, not the proof of it. A block that felt like effort still counts if it moved the work.
It’s tempting to treat deep work and flow as the same thing. But Cal Newport, author of Deep Work (2016), sees it differently.
On the Huberman Lab podcast in 2024, he said flow plays no big role in his framework. For him, deep work is closer to deliberate practice, and flow is the performance state.
My view: the whole block is built to get you into flow. Once flow comes, you don’t interrupt it, not even when the timer rings. But on days with poor concentration it doesn’t come.
The same flow research explains why a block can feel hard. Flow needs a challenge that matches your skill. Too hard feels anxious, too easy feels boring.
On those days, the protocol sheet keeps the work moving. You write down every step, so you always know where you are and what comes next.
How do you know you were really in deep work?
While you’re absorbed in a block, you stop checking the time, reaching for the phone, rereading the same sentence. These signs show whether you’re in flow and rested, not whether the block counted. Hold your last block against both columns:
| Signal | Absorbed | Not absorbed |
|---|---|---|
| Timer | You don’t hear it ring | You keep checking the remaining time |
| Phone | You forget it exists | You keep reaching for it |
| Reading | You move forward | You read the same sentence three times |
| Thoughts | A keyword on paper, then back | You follow a “useful” tangent |
| End | Your brain slowly asks for a break | You sit in front of the task, nothing happens |
If the right column fits before you’ve even started, ask yourself honestly whether you’re rested enough for a block today.
One sign on its own proves nothing. Look at several, and at the end of the block, check the result.
Why can deep work feel like you got nothing done?
Deep work often feels less productive than a busy day of email. That’s why the check at the end of a block matters. Judge the block by its result, not by how it felt.
In the middle of a hard problem, you can’t see the outcome yet. That uncertainty is stressful, and you may worry that the time is wasted.
At the end of each block, I check against my block goal: reached, partially, not at all. No judgment, just observation.
At the end of the day, I read my protocol sheet. The list of completed steps I wrote myself brings satisfaction.
A feeling is a poor measure here. An hour of email feels busy; an hour on one hard problem may not. The block goal and the protocol sheet show you what really moved.
What does deep work feel like afterwards?
After a good deep work day you know what you got done. That’s the difference from a busy shallow day:
- After a shallow day: busy all day, nothing tangible done, tired and dissatisfied, the work still running in your head.
- After a deep day: a list of finished steps on your protocol sheet.
- In the evening: time off with a good conscience, because you know what you got done.
Take the break seriously. The temptation to keep going just a bit longer is strong.
But your brain needs the break, even when you don’t feel it. Without breaks you burn out, and the following blocks get worse.
Acknowledging what you did brings satisfaction, and that makes it easier to start again tomorrow. So acknowledge it: you did focused work today, whether it was three blocks or six. The evening is yours with a good conscience.
That evening starts at the desk: a written goal before each block, a clean stop after it. Then your protocol sheet tells you what you got done, even on days that felt hard. See how it works →
FAQ
Is hyperfocus the same as deep work?
Hyperfocus and deep work can both feel absorbing. The difference is the frame.
A deep work block is chosen and has a block goal and an end. You stop for a break when your brain asks for one.
Is deep work the same as meditation?
No, but meditation trains the skill deep work needs. You catch yourself when your mind drifts and come back to the task.
Meditation requires concentration itself, though. So practise it outside work, not in your breaks.
How long can you stay in deep work?
A deep work block lasts 15 to 90 minutes, depending on your state; in flow, keep going. Four to six hours a day is a realistic upper limit. I manage five to six on good days, three on weak ones.
Does deep work feel easier over time?
Yes. Catching yourself drifting is a skill, and deep work gets easier with every block.
At first you’ll notice how often you drift off, which is normal. After a few weeks, the process is routine.
