Deep Work: Book Notes

Juan Herrera
3 min readJan 26, 2025

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Here are my notes from the book Deep Work by Cal Newport.

My book rating is 4/5 because 25% of the book contained much irrelevant advice, having said that this book is the holy grail for those who want to live a meaningful life by achieving their most productive and creative outcome.

Introduction to Deep Work

  1. If you are familiar with the psychological concept of the Flow, then this book is about achieving it deterministically and making it a lifestyle.
  2. Deep work is the practice of focusing without distraction on a cognitively demanding task and producing meaningful outcomes.
  3. We have limited opportunities in life to do our most meaningful work; deep work helps us make the most of those opportunities.
  4. On the opposite, we have shallow work, which is the kind of activities that have little value but we must do anyway (checking emails, replying on social media, etc.).
  5. Shallow work’s “damage” is often underestimated, while its “importance” is often overestimated.
  6. Engaging in deep work contributes to a more satisfying life. As Winifred Gallagher said: “I’ll live the focused life because it’s the best kind there is.”

Setting Boundaries

  1. Switching frequently between high-value tasks and low-value distractions trains the mind to crave novelty and undermines your capacity to focus.
  2. Start by scheduling when you want to achieve deep work and when you want to do shallow work. You should not be accessible/interrupted during your deep work times.
  3. Be mindful that deep work can only be achieved up to 4 hrs a day. This is the limit for most people to sustain peak cognitive performance (according to studies).
  4. Make sure you communicate these schedules openly, people are more likely to respect your focus time if it is clearly communicated and consistently observed.
  5. In doing so, you might need to let small and less important tasks slide. As Tim Ferris put it: “Develop the habit of letting small bad things happen. If you don’t, you’ll never find time for the life-changing big things.”
  6. Don’t try to say ‘no’ to the trivial distractions; try to say ‘yes’ to the goal that excites you the most and let that goal mute all other distractions.

Changing your environment

  1. Another great way to signal to your brain that you will be in deep work mode is by changing your environment or investing in a space specifically designed for concentration.
  2. J.K. Rowling often secluded herself in specific, distraction-free locations to write, such as in hotels near Hogwards-looking castles.

Disconnecting

  1. Achieving deep work is draining and exhausting. Consider using ART (Attention Restoration Theory) to restore your attention capacity by spending time in nature.
  2. If nature is not available, find alternatives with "inherently fascinating stimuli" such as casual conversation with a friend, listening to music while making dinner, playing a game with your kids, going for a run.
  3. Regardless, once your workday ends, do not allow professional concerns to invade your attention. This will impact your capacity to restore and do more meaningful work the next day.
  4. Just make sure that you have a plan for unfinished tasks at the end of the day. Not doing so will trigger the Zeigarnik Effect, making it harder to truly disconnect.

Embracing Deep as Default

  1. Imagine what would happen in your life if you were much more deliberate about where you put your attention and your thoughts.
  2. So instead of scheduling occasional breaks to focus, schedule occasional breaks from focus to handle shallow tasks. Make deep work the default mode.

Conclusion

Deep work is a powerful strategy for achieving our highest-value goals in an era saturated with distractions. By implementing clear boundaries, rituals, and environments that foster sustained concentration, we strengthen our ability to focus and direct our attention where it truly counts. Scheduling deep work as the default — and resting intentionally — helps us live a more meaningful, fulfilled, and productive life.

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Juan Herrera
Juan Herrera

Written by Juan Herrera

Google Developer Expert and Maker

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