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Two properties shape everything else: tracking takes the time it measures, and it changes how that time gets spent.

• What You Are Actually Trying to Find Out4 min
• Measurement Is a Cost4 min
• Observing Changes the Thing Observed4 min
• What the Evidence Supports4 min
• The Question to Ask First3 min

Five methods with different costs and different blindness. The expensive one is not the best one; it is the most accurate.

• The Time Diary4 min
• Sampling Instead of Recording4 min
• Automatic Capture3 min
• Retrospective Estimation4 min
• Timers and the Pomodoro Family3 min
• Calendar as Record4 min
• Which Method Fits Which Question3 min

Read the entries as a narrative before summing anything. Totals give proportions; sequences give causes.

• The First Week of Data3 min
• Categories You Will Regret3 min
• Averages Hide the Problem4 min
• What a Week Actually Looks Like3 min
• Comparing Yourself to Yourself3 min
• When the Data Says Nothing3 min

The same findings recur across almost every record, which makes them worth knowing before you start.

• The Gap Between Planned and Actual3 min
• Context Switching3 min
• Meetings4 min
• Admin That Grew3 min
• Waiting, Blocked and Dependent4 min
• The Hours That Vanish4 min
• Overrun and Optimism4 min

One change, sized for an ordinary day, measured against one figure. Several at once means none can be attributed.

• Changing One Thing4 min
• Calendar Blocking, Honestly3 min
• Saying No With Evidence3 min
• Batching and Its Limits3 min
• Protecting a Block3 min
• When the Change Does Not Hold4 min

Where tracking pays directly: estimates, rates, and evidence for a conversation about workload.

• Freelance and Billable Hours3 min
• Estimating From Your Own Data4 min
• Tracking for a Client Versus for Yourself3 min
• When Your Employer Also Tracks You3 min
• Shared Calendars and Other People3 min
• Study and Learning Time3 min

The largest category in many weeks is absent from every tracking product, and some things should not be measured at all.

• Unpaid Work and Care4 min
• Rest Is Not Residue3 min
• Hobbies and the Trap of Optimising Them3 min
• Long Projects and Slow Progress4 min
• Health, Sleep and the Limits of Self-Data4 min

Measuring can become the activity rather than a tool for one, and the signs are specific.

• When Tracking Becomes the Problem3 min
• Data About Other People4 min
• What Not to Measure3 min
• Requests to Refuse3 min

The end state, the limits stated plainly, and where to start.

• What a Working Arrangement Looks Like3 min
• What Tracking Cannot Fix3 min
• Glossary4 min
• Where to Start Reading3 min