Why am I always late?
Last updated 5 August 2026 · 5 min read
If you are late to things you genuinely care about — to see friends, to a flight, to something you were looking forward to — then the usual explanation on offer is wrong. Nobody is indifferent to a flight. Something is failing upstream of your intentions, and it is worth identifying which of these it is, because the fixes are not interchangeable.
The four causes
1The planning fallacy
You estimate journeys using your best-ever version of them, not your average one. This is one of the most reproducible findings in decision research: people systematically underestimate how long their own tasks will take, even when they have done the same task many times before.
How you know it's this one: Your estimates are consistently short by roughly the same amount.
The fix: Time one real trip end to end and use that number instead of your memory. If you can, use the slowest version you can remember, not the fastest.
2Time blindness
You don't reliably feel time passing. Twenty minutes and fifty minutes register as roughly the same amount of 'a while', so you look up and the window has closed. This is extremely common with ADHD but not exclusive to it.
How you know it's this one: You are genuinely shocked by the clock, rather than aware you were pushing it.
The fix: Move timekeeping outside your head. External alerts that arrive on their own beat any technique that requires you to check or estimate.
3Transition costs you never count
The journey isn't the trip. It's finding keys, shoes, the bag, the charger, locking up, parking, and walking to the right door. Each is small enough to feel like nothing and they routinely add fifteen minutes.
How you know it's this one: The drive really does take what you thought, and you're still late.
The fix: Measure door-to-door rather than address-to-address, and move as many of those tasks as possible to the night before.
4Optimism about traffic
You leave at the time that works when the roads are clear, then treat the days they aren't as bad luck. Over a month, the 'unlucky' days are most of them.
How you know it's this one: You're on time on quiet days and late in rush hour, and you're surprised each time.
The fix: Base departure on live conditions rather than a remembered average. This is the one thing you genuinely cannot do in your head.
Why the same fix keeps not sticking
Most advice about punctuality is some version of “leave earlier”. That isn't wrong, it's just incomplete: it tells you to change the output of a calculation without changing the calculation. If your internal estimate is short by fifteen minutes, “leave earlier” gets applied to the same faulty number and produces a slightly less late departure.
It also asks you to make a careful decision at the worst possible moment — while you're mid-task, half-dressed, and thinking about something else. Any system whose critical step happens under those conditions will fail some of the time, and “some of the time” is what chronic lateness is made of.
The one thing you can't do in your head
Three of the four causes above can be partly patched with better habits. The fourth cannot. Live traffic is not knowable by introspection — the correct departure time for the same trip differs by twenty minutes or more between a clear Tuesday and a jammed Thursday, and no amount of discipline gives you that information.
This is the specific job an app is genuinely better at than you are. Can't be Late reads your next calendar event, checks live traffic and your real distance to the destination, adds the buffer you set once, and sends a notification at the moment you need to leave. It doesn't ask you to estimate anything, and it doesn't depend on you remembering to check. Here's exactly how it calculates that.
Common questions
Why am I always late even when I try to be early?
Because effort doesn't correct a measurement error. If your estimate of the journey is 15 minutes short, trying harder just means you start the same too-short journey with more stress. The fix is to change the number you're working from — measure a real door-to-door trip and plan from that.
Is chronic lateness a sign of ADHD?
It can be one indicator, particularly when it comes with time blindness — genuinely not feeling time pass rather than choosing to push it. But plenty of people without ADHD are chronically late for the more ordinary reasons: the planning fallacy, uncounted transition costs, and optimism about traffic. Lateness alone is not diagnostic, and only a clinician can assess ADHD.
Does being late mean I'm disrespectful?
Usually not. It reads that way to the person waiting, which is why it's worth fixing, but the mechanism is almost always faulty estimation rather than indifference. People who are late to things they care about deeply are the clearest evidence of this.
Can an app actually fix being late?
It can fix the part that most reliably fails. An app can't get you out of the door, but it can remove the moment where you guess when to leave — which is where most lateness originates. Can't be Late calculates your departure time from live traffic and your calendar and pushes an alert at that moment, so the estimate is never yours to get wrong.