QUESTIONS WE HEAR
The short answer: An appointment or interruption can affect much more than the minutes it occupies. Anticipating the event, stopping what you are doing, transitioning to it, keeping track of time, and restarting afterwards all place demands on executive functioning. For some people with ADHD, the transition costs more than the event itself.
Your appointment is at 2:00 p.m. It lasts 30 minutes.
Somehow, the entire day feels gone.
You do not begin anything substantial in the morning because: “I have that appointment later.”
At 12:30, you start watching the clock. At 1:15, you decide there is no point beginning anything.
The appointment ends at 2:35. You return to your desk at 3:00. You cannot remember what you were doing.
By the time you get traction again, the day is almost over.
A 30-minute appointment consumed six hours of usable attention.
The appointment may not be the main problem
Look at everything surrounding it.
- Remembering the appointment
- Estimating when to stop your current task
- Avoiding becoming so absorbed that you miss it
- Transitioning out of what you were doing
- Preparing or travelling
- Attending
- Returning
- Reconstructing what you were doing before
- Reactivating yourself
That is a lot of switching.
STG Health Clinical Perspective
When somebody says, “One appointment ruins my whole day,” we usually want to understand the transition before and after the appointment, not simply the appointment itself.
Why can’t I start anything beforehand?
Sometimes the person is trying to prevent a different problem: getting absorbed and losing track of time.
If you have repeatedly missed appointments or rushed out the door because you became immersed in another task, your brain may eventually adopt a protective rule: Don’t start anything important before an appointment.
That rule prevents one problem. It creates another.
The entire period before the appointment becomes waiting time.
Build a category of “appointment-day tasks”
Not every task needs uninterrupted deep work.
If starting a complex report at 10:00 before a 12:30 appointment reliably creates difficulty, stop scheduling that kind of task there.
Use the pre-appointment window deliberately for work that is easier to leave:
- Routine email
- Filing
- Short administrative tasks
- Preparation
- A brief phone call
- Simple household work
- Another task with an obvious stopping point
That is different from doing nothing while waiting.
Interruptions create a restart problem
Imagine you are finally working effectively. Someone calls. You answer.
Ten minutes later, you return to the computer. What were you doing?
You know the project. But you cannot immediately locate the mental position you occupied before the interruption.
You reread several things. Check another tab. See an email. Twenty minutes later, you have not returned.
The problem was not the ten-minute call. It was losing the re-entry point.
Leave yourself a restart cue
Before switching away from a task, record one sentence: “When I return, the next thing I need to do is…”
For example: “When I return, compare the two numbers in column E.” Or: “When I return, finish the paragraph beginning with the treatment recommendation.”
This reduces the amount of reconstruction required later.
It is a small intervention. It can make interruptions considerably less expensive.
What about unexpected changes?
Planned transitions are one problem. Unexpected ones can be harder.
You had mentally constructed the day. Then the meeting moved. The school called. A client cancelled. Someone needs something urgently. The weather changes your travel plan.
Now you need to rebuild the schedule while already emotionally reacting to the disruption.
Some people interpret the resulting frustration as: “I am terrible with change.”
Maybe. But first ask: How much rebuilding did the change require?
The Recovery Question
After a disruption, avoid immediately trying to recover the entire original plan.
Ask: What is the next useful thing I can still do today?
Not: “How do I get the whole day back?”
That question is often impossible.
The Recovery Question makes the restart smaller. Sometimes recovering one meaningful task is enough to prevent a disrupted morning becoming an abandoned day.
Protect transition time
Calendars often contain only events. They do not contain transitions.
A 1:00 appointment is entered as 1:00–2:00. But in real life it may require:
- 12:35 — stop working
- 12:45 — prepare or leave
- 1:00–2:00 — appointment
- 2:00–2:20 — return and reset
The calendar should reflect the actual demand rather than pretending transitions are free.
Questions people also ask
Why do I spend all morning waiting for an afternoon appointment?
Anticipatory monitoring can consume attention, particularly when you do not trust yourself to transition reliably. Deliberately assigning interruptible tasks to that period can help.
Why is it so hard to restart after being interrupted?
You may have lost contextual information about where you were and what came next. A simple written restart cue can reduce the amount of reconstruction needed.
Is difficulty with changes of plans always ADHD?
No. Anxiety, autism, stress, sleep deprivation and other factors can also affect how someone responds to unexpected change. The broader pattern matters.
Should I avoid scheduling appointments during the day?
Not necessarily. The goal is to account realistically for transition costs rather than expecting every open minute around an appointment to function as productive time.
What can I do next?
For your next appointment day, deliberately plan one pre-appointment task and one post-appointment restart task.
Do not leave both periods undefined.
You may also be wondering
Why Can I Show Up for Everyone Else but Struggle to Do the Same Things for Myself?
Why Do I Keep Building ADHD Systems That I Stop Using?
Clinical review
Clinically reviewed by Chris de Feijter, EdD., MACP
Clinical Lead & CEO, STG Health Services Inc.
SaskADHD
SaskADHD is a specialized ADHD service of STG Health Services Inc.
Educational information only. Difficulty with transitions is not specific to ADHD and should be understood in the context of the individual.
Sources (1)
- Canadian ADHD Resource Alliance (CADDRA), Canadian ADHD Practice Guidelines
