Name the starting state
One word for how you are, one number out of ten. Not a plan for the day, not an intention. Just a reading, so that by Friday you can see whether Wednesday was unusual or normal.
Small enough to survive a bad week
Daily practice
Almost every self-directed attempt at this fails the same way: an ambitious first week, a thinner second, and nothing by the fourth. The fix is to start deliberately smaller than you feel capable of, because the practice has to be executable on the days you are not.
The whole daily routine
Under five minutes. That is not an underestimate — it is the design.
Three lines
What happened, intensity out of ten at the worst point, what you did about it. The same three every day. Uniformity is what makes it possible to read back a fortnight and see something.
One skill, used or not used
Write which one you intended and whether you used it. Not using it is data, not a failure — a skill you keep intending and never reaching is telling you something about where your threshold actually is.
One thing that went better
However small. This exists because BPD recall is heavily weighted toward the bad, and a written record is the only reliable counterweight. Skipping this is the most common way the log becomes demoralising.
The defined minimum
Decide now what this reduces to: usually just the intensity number and nothing else. Deciding in advance is the entire trick — deciding in the moment always produces zero.
Why the last attempt stopped
Practices fail for a small number of predictable reasons. Tick what happened last time.
Missing four days is not a failed practice. Restarting from day one after missing four days is what turns a gap into an ending — write today's entry and leave the gap in.
Practical questions
The mechanics people ask about.
Paper or phone?
Whichever you already have with you at eleven at night. Paper is better for reading back; a phone is better for actually being used. A used phone note beats an unused notebook by a wide margin.
What if nothing happened today?
Write that. A run of unremarkable days is exactly the evidence that is most useful later, and it is the part people skip — which is why logs so often read worse than the period they describe.
How long before it does anything?
The writing does very little on its own. The reading-back is where it pays, and that needs about two weeks of entries before patterns are visible.
Should I share it?
With a therapist, yes — dated specifics change what a session can cover. With a partner, generally not. A log written for an audience stops being honest within a week.
Is this the same as journalling?
No, and the difference is why this survives. Journalling is open-ended and demands capacity you may not have. Three fixed fields can be completed at an eight out of ten.
Where does the book cover this?
Chapter 19, on sustainable routines, is the relevant one — it treats structure as the foundation rather than as an afterthought.
Educational disclaimer: this page supports book discovery and general learning about borderline personality disorder. It does not diagnose, replace individualised professional care, or provide emergency support. If you are in crisis, contact local emergency services or a crisis line — see the crisis support page.