Where the common numbers come from
1-3-5 — one big task, three medium, five small. Nine items, weighted.
Eat the Frog — one hard task first, everything else after.
MITs — two or three Most Important Tasks that define whether the day worked.
All three agree on the part that matters: a small committed set with an unambiguous first item. They disagree only on how to count the small stuff.
Be honest about what a long list is doing
There is nothing wrong with holding forty items. The mistake is calling that a daily plan.
Keep two artefacts: an inventory that holds everything, and a short committed list for today drawn from it. The problem isn't length — it's collapsing both jobs into one document and then feeling defeated by it.
The number is less important than the order
A list of three unranked items still requires a decision. A list of ten in a fixed order does not. Given that Mark, Gudith & Klocke (2008) found interruption and switching carry a measurable stress cost, minimising the number of times you re-choose is worth more than trimming the list.
Decide once, then work down.
A workable default
One task that makes the day count. Two or three that should also happen. Everything else visible but explicitly not today.
If you finish, pull the next item up. Finishing early is a much better problem than a list engineered so you always fail it.
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Frequently asked questions
Is it bad to have a long to-do list?
Not if it's labelled as an inventory. It's bad when a forty-item list is treated as today's plan, because it guarantees the day ends in apparent failure.
What if everything genuinely has to happen today?
That's usually a capacity problem rather than a prioritisation one, and no method fixes it. Decide what slips and tell whoever is affected early — a renegotiated deadline costs far less than a missed one.
Should I include small tasks?
Include them, but keep them separate from the committed set. Five two-minute tasks can crowd out the one thing that mattered, because they're easier to start.