Your to-do list is never going to be finished. That is not a figure of speech or a gloomy forecast; it is arithmetic. More requests, ideas and obligations arrive than fit into the hours you have, and that holds for you, for the most organised person you know, and for the people who write books about getting organised.
That is where the unease comes from. Every evening you close the day facing a document whose whole job is to list what did not get done. Even on good days it ends in the red. And because it is the only ledger you keep, the conclusion feels obvious: the day was not enough.
A done list does not fix the arithmetic. Nothing does. It just opens a second ledger, and that matters more than it sounds.
The difference in one sentence
The to-do list points forward and exists to help you decide; the done list points backward and exists to help you see. One can never be finished by definition; the other is complete every night.
Where the list of things done came from
The name "ta-da list" floats around without a traceable author, and I am not going to invent one. The oldest version with a named author and a date that I could verify is Marc Andreessen's "anti-todo list", from a productivity guide he published in 2007: every time you do anything useful during the day, write it on the card. At the end, look it over, feel that the day was well spent, and throw the card away.
Notice the detail almost nobody repeats: he threw it away. The list was not an archive, not a report, not evidence for anyone. It was a tool for his own mood, used once and binned. His reason, in his own telling, was the little rush a lab mouse gets pressing the lever for a food pellet, a way of feeling productive on the days when, without a record, it would have seemed like nothing got done.
The to-do list, meanwhile, has a more serious job than it looks. Masicampo and Baumeister showed that an unfinished goal keeps occupying your mind, and that making a concrete plan for it is enough to ease that pull, even without completing the goal. The to-do list is where open things go to rest. The done list does not do that: it closes nothing that is still open. It only shows you what already closed.
What the evidence supports, and what it does not
The argument most often cited in its favour comes from Teresa Amabile and Steven Kramer. They analysed nearly 12,000 diary entries written by 238 professionals on 26 project teams in seven companies over roughly four months. On people's best-mood days, some progress had happened 76% of the time; setbacks showed up on only 13% of them. Small events, like a modest step forward on a project, often had an outsized effect on how people felt about their work.
But the article itself admits the limit: this is correlation. Progress and good mood travel together, and each probably feeds the other. And the study did not test done lists; it followed people on project teams describing their own days.
The stronger evidence is of a different kind. A 2016 meta-analysis pooled 138 randomised experiments with nearly 20,000 participants and concluded that monitoring progress towards a goal helps people reach it, with a moderate effect, and that the effect is larger when progress is physically recorded or made public.
Read the small print: progress towards a goal. There is no controlled study of the done list as a technique. What exists supports one specific kind of done list, one that records movement on something that matters, and does not support a list of everything that kept you busy.
Which one to use when
The two side by side
| To-do list | Done list | |
|---|---|---|
| Direction | Future | Past |
| Question it answers | What do I do now? | What have I already done? |
| When it is complete | Never | Every evening |
| Main risk | Judging the day only by what is missing | Rewarding busyness instead of progress |
| Evidence | Concrete plans ease the pull of unfinished goals | Monitoring progress towards a goal helps; the technique itself is untested |
What neither of them solves
No list changes the arithmetic from the start. You will keep having more possible things than time, and you will keep choosing, every day, what gets left out. A done list does not make that choice easier; it just stops you forgetting that you made it, and that something did, in fact, get done.
Why I wanted this in ASB
I spent years closing the day on the list that never ends and going to bed feeling in debt. What changed was not doing more: it was having somewhere to see what had already gone out the door.
That is why ASB is not only an assistant on WhatsApp that reminds you of what is left; it also asks about, and keeps track of, what you have already done.