Where the term comes from
Long-standing calendar practice, popularised in modern form by Cal Newport and by AI scheduling tools such as Motion and Reclaim.ai.
Why it matters
It converts an unbounded list into a bounded plan and makes over-commitment visible — you cannot block eleven hours of work into a seven-hour day without noticing.
The common mistake
Blocking time without deciding what deserves it. A calendar full of blocks for the wrong work is a well-organised waste of a week.
What it looks like in practice
You block 9–11am for the report. At 9:40 someone asks for twenty minutes. The block does not physically stop them, but it does make the trade visible — you are now deciding to give away report time rather than vaguely losing it.
Read more
Frequently asked questions
What is time blocking?
Time blocking is assigning specific calendar slots to specific work, so tasks occupy defended time rather than sitting on an open-ended list. It also makes over-commitment visible, because you cannot block eleven hours into a seven-hour day without noticing.
What's the most common mistake with time blocking?
Blocking time without deciding what deserves it. A calendar full of blocks for the wrong work is a well-organised waste of a week.