You said you’d leave at seven. You checked the clock at twenty past six and thought: plenty of time. The next time you looked it was five to seven, you still hadn’t found your keys, and you had no idea where the half hour went.
It happens on the other side too. You sit down for “ten minutes” and stand up two hours later with a stiff neck. Same brain, same missing clock.
And then the familiar part: the apology, the excuse that sounds thin even to you, the quiet suspicion that a person who cared more would simply be on time.
This isn’t carelessness
You are not casually disrespecting other people’s afternoons. What you’re describing has a name — time blindness — and it’s one of the most consistently reported experiences in ADHD.
Russell Barkley, whose executive function model underpins most of the modern understanding of ADHD, frames it bluntly: ADHD is in large part a problem with time. Not with knowing what the clock says, but with feeling where you are inside it. Most people carry a rough internal sense of time passing and of how the next hour will unfold. In ADHD, that sense runs quieter — so time has to be worked out deliberately, from the outside, every single time you need it.
Which means every “I’ll leave in a minute” is a calculation, not a perception. And calculations get skipped when you’re already busy.
Three things that are actually going on
1. Time isn’t a feeling, it’s a task.
If you can’t feel the hour draining, you have to check — and checking has to compete with whatever you’re doing. That check comes from the same strained pool of executive bandwidth that planning and starting and switching come from. When you’re absorbed in something, the check doesn’t happen. Not because you decided to ignore it. Because nothing reminded you it was due.
2. There is “now” and there is “not now.”
ADHD brains respond much more strongly to immediate outcomes than to delayed ones — that’s one of the better-established findings in the research. The practical effect is that the future is thin. A train in forty minutes isn’t a pressure you can feel; it becomes real somewhere around the eight-minute mark, and then all at once. This is also why the same person can be chronically late and unbearably early: once the deadline finally registers, it registers as an emergency.
3. You’re not estimating the whole thing.
Ask how long leaving the house takes and your brain times walking out of the door. Not finding the keys, not the shoes, not the “oh, the bin”, not the two minutes standing still wondering if you’ve forgotten something. Tasks have gaps between them, and the gaps are where your schedule actually dies. Your estimate wasn’t wrong about the task. It just never counted the joins.
What actually helps
The pattern here is the same throughout: stop asking your brain to produce a signal it doesn’t reliably produce, and put the signal in the room instead.
Make time visible, not checkable
A clock you have to remember to look at is useless. You need time you can see without deciding to — an analogue clock in your line of sight, a visual timer that visibly shrinks, a phone that counts down on the screen instead of staying silent until it’s too late. Anything that turns “what time is it?” from a question into something you just notice.
Time the gaps, not the task
When you plan, add the joins: finding things, moving between rooms, the pause before you start. A useful trick is to time the whole thing once — door to door, start to actually-finished — and then use that real number instead of the optimistic one. You won’t believe it. Use it anyway.
Work in blocks short enough to feel
Long stretches are where time disappears. A short, fixed window — five or ten minutes — gives the hour edges. It makes the work finite, it tells you when to look up, and it gives you an honest answer to “how long will this take?” because you’ve agreed the answer in advance.
Set the alarm for leaving, not for starting
Most people set a reminder for the appointment. Set it for the moment you have to stop what you’re doing — and then one more a few minutes before that, so the switch isn’t a jolt. The thing you need warning about is never the event. It’s the transition.
Let the overshoot be information
You went forty minutes over. That’s not a verdict on your character; it’s data for the next estimate. People who get better at this don’t develop an internal clock — they collect a list of how long things really take, and they stop arguing with it.
Where Sammy fits
Sammy is built so the clock isn’t your job. Each task is a single card with a short timer on it, so a task is a visible, finite block of time rather than an open stretch you can fall into. Swipe right and the countdown starts and stays on screen; swipe left and the task steps aside without becoming tomorrow’s pile. Finishing earns a small reward from a squirrel who has no opinion about how long it took you.
It won’t give you a sense of time. It will give you something to look at instead — and if that’s the part you keep losing, it’s free to try.
Sammy is a productivity tool, not a medical device. If losing track of time is affecting your work, relationships or wellbeing, a clinician who knows ADHD can help — and the research behind this article is a good place to read more.
