The Filter (Monthly Migration)
Rewrite your open tasks each month and keep only what passes three questions
- Difficulty
- Easy
- Time to result
- ~weeks to results
- Steps
- 5
- Confidence
- 90%
Migration is the Bullet Journal method's curation engine, run most fully once a month. You go back through the previous month's open tasks and physically rewrite the ones worth keeping into your next monthly log. The deliberate friction of rewriting is the point: if a task isn't even worth a moment to copy over, it probably isn't adding value to your life. To decide what survives, you run each item through The Filter — three questions asked in order: Is it vital (would skipping it get you in real trouble, like rent or loans)? Does it matter (to you or to someone you love)? Are there any consequences for not doing it? Items that fail all three get crossed off and left behind, so you continuously recommit to what matters instead of hoarding a never-ending list.
Origin
Extracted from Deep Dive with Ali Abdaal. Carroll developed migration and The Filter as the recommitment ritual at the heart of his method, having never once completed every task in a month across decades of practice.
Core principles
- 01The friction of rewriting is a feature, not a bug
- 02If something isn't worth a moment to rewrite, it isn't adding value
- 03Tasks are experiences waiting to be born — choose them deliberately
- 04Curate your life on an ongoing basis rather than hoard endless to-dos
- 05Approach undone tasks with curiosity, not self-judgment
How to run it
- 1
Gather the open tasks
At month's end, look back through the previous month and pull every task still not done.
Pro tip Instead of feeling lazy about undone items, ask why each one didn't get done.
- 2
Ask: is it vital?
Vital things are the ones that get you in trouble if skipped — rent, student loans, obligations with hard stakes.
- 3
Ask: does it matter?
Determine whether it matters to you or to someone you love. It's often easier to judge what matters to a loved one than to yourself, so be honest about your own gray areas.
Pro tip The recurring 'learn French' task is the classic thing you keep migrating until you admit you no longer care.
- 4
Ask: any consequences?
If you're unsure whether it's vital or matters, check whether there is any consequence at all for not doing it. No consequence and no meaning means it can go.
- 5
Cross off or rewrite
Leave failed items behind by crossing them off; rewrite the survivors into next month's log, recommitting to them by hand.
Pro tip Rewriting an event multiple times makes you look forward to the ones you want and question the ones you don't.
Watch out Don't let hardness be the deciding factor — quit for lack of value, not lack of ease.
In the wild
Reviewing his prior month, Ali migrated 'sign up to new gym' and 'cancel current gym subscription' (both vital to his house move), kept 'couples therapy' and 'lunch with the team' as things that mattered, dropped 'take a psychedelic' as not important right now, and migrated 'sign up for kickboxing' forward as still appealing but not yet done.
→ A short, deliberately chosen list where every item had been actively recommitted to.
Common mistakes
Beating yourself up over undone tasks
Treating incomplete items as proof you're lazy ends the inquiry; asking why they didn't get done turns them into useful data.
Letting difficulty be the filter
Dropping tasks because they're hard rather than because they lack value discards things that actually matter.
Is it for you?
Best for
Anyone whose task list accumulates faster than they complete it and who wants a disciplined way to let things go.
Not ideal for
People who need every obligation tracked regardless of personal meaning, such as strict compliance workflows.
From the transcript
“we use this thing called the filter where we ask ourselves three questions is this thing vital”
“if something's not worth a moment to rewrite it then chances are it's not adding a lot of value to your life so it's not…”
From the episode
The Ultimate Method To Take Control Of Your Life in 2023 - Ryder Carroll
Ryder Carroll