TL;DR:
A kanban board is columns that show where each task is, from not started to done.
Limit how many cards may sit in the doing column at once, so work finishes instead of piling up.
Write a definition of done for each kind of card so everyone agrees when to move it.
Your to-do list has forty items and you started eleven of them. Nothing is finished, everything feels urgent, and you cannot say what is blocked. A kanban board fixes this by making the state of each task visible. It works on a whiteboard with sticky notes, in a spreadsheet, or in any board-style app.
When a board helps
A board suits ongoing work with many small tasks, whether for a team, a household project or your own week. It is less useful for a single task with one deadline, where a short checklist is enough. If your problem is "too many things half done", a board is the right tool.
Before you build it
List everything you are currently carrying, including small items. Put each on its own card, written as an action: "Send the quote to the printer".
Decide who the board is for. A personal board can be crude. A team board needs names on cards.
Decide how you will look at it: ideally a few minutes every day, and a longer look once a week.
Step by step
Make the columns: Start with four: To do, Doing, Waiting, Done. Add a column only when a real situation needs one.
Put every card in its true column: Be honest. A task you started and stalled goes in Waiting or back to To do, not Doing.
Set a limit on Doing: Choose a number that fits your capacity. For one person, two or three is plenty. Write the limit at the top of the column.
Write the definition of done: For each kind of task, write what must be true to move it to Done, in one line.
Pull, do not push: When you finish a card, pull the next one from To do into Doing, in priority order. Do not start something new while Doing is full.
Review weekly: Move finished cards out of sight, remove cards you will never do, and re-sort To do.
Worked example: a board with four columns
A three-person club is organizing a fundraising bake sale. Here is the board on Monday, using a work in progress limit of three on Doing.
To do | Doing (limit 3) | Waiting | Done |
|---|---|---|---|
Book the hall | Make poster | Permit approval | Choose date |
Order boxes | Collect recipes | Quote from printer | Pick a cause |
Sign up bakers | Set up payment jar | ||
Plan the setup |
Count the cards: 4 in To do, 3 in Doing, 2 in Waiting, 2 in Done. That is 4 + 3 + 2 + 2 = 11 cards in total. Doing is at its limit of three, so nobody starts "Order boxes" yet. If the poster is finished, it moves to Done, which leaves Doing at two, and the next card from To do, "Book the hall", is pulled in.
Why the limit works
Because only three things can be in progress, the way to start something new is to finish something. The board shows the bottleneck: if Waiting keeps growing, the problem is not effort but answers you are waiting for, and you can chase them.
Definitions of done in practice
Make poster: done when the file is exported and sent to the printer, not when the design looks nearly right.
Sign up bakers: done when ten names are on the list and each has confirmed what they are bringing.
Book the hall: done when you have a written confirmation and have put the date on the shared calendar.
Without these lines, one person calls the poster done when it is drawn and another when it is printed. The board then lies. The definition removes the argument before it starts.
Mistakes to avoid
Too many columns. Every extra column is another place for cards to hide.
Cards that are projects instead of actions. "Bake sale" is not a card. "Book the hall" is.
No limit on Doing, so the column becomes the old to-do list with a new name.
Never reviewing. A board nobody looks at is just decoration.
Leaving done cards on the board forever. Clear them weekly so the board stays readable.
Tip: Keep a cards in progress count in view. If you are using a spreadsheet as the board, =COUNTIF(B:B,"Doing") counts rows in column B whose text is exactly Doing, so you can see at a glance whether you are over the limit.
Doing it faster
Use whatever board you already have. The method matters more than the app. If you want to talk a messy to-do list into cards, DuckyHelper can listen while you describe what you are carrying and help you word each card as an action; you still choose the columns and the limit.
Frequently asked questions
Do I need special software?
No. A whiteboard with sticky notes, a table with four columns in a document, or a board-style app all work. Choose the one you will actually look at.
What limit should Doing have?
Start with a small number, such as two or three per person, and adjust after a week. If cards keep getting stuck, lower it.
What goes in Waiting?
Anything you cannot move forward until someone else replies or delivers. Add a note of who and since when.
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