Why Can I Do Something One Day but Not the Next?
Capacity can change from day to day. The task may be the same, but what you have available for it may not be.
- Capacity is not always the same from one day to the next.
- Sleep, pain, sensory load, stress, illness and previous activity can all make a difference.
- Something that looks like one task may actually contain many smaller demands.
- It can help to make the task fit the capacity you have today.
Some days you may be able to cook dinner, go to an appointment, do some shopping or spend time with other people.
On another day, the same thing can feel much harder.
That can be confusing.
“Why could I do this yesterday, but not today?”
Capacity can change
Your capacity is not always fixed.
It may be affected by things such as:
- sleep
- pain
- migraine
- illness
- sensory load
- stress
- concentration
- social demands
- how much you have already done
- how much recovery you have had
Sometimes several small demands add up.
You may not notice the effect until your capacity is already low.
The task may be the same
The important difference may be your starting point.
Grocery shopping usually uses quite a lot of your available capacity.
On a reasonably good day, you may have enough capacity available.
On a difficult day, pain, poor sleep, noise or stress may already be using much of it.
The groceries have not changed.
What you have available for them has.
One task can contain many demands
Something may look simple from the outside while using physical, sensory, thinking, emotional and social capacity at the same time.
Capacity is about more than physical energy
Going to an appointment might involve:
- getting ready
- travelling
- dealing with noise or lights
- remembering information
- answering questions
- making decisions
- managing uncertainty
- talking to another person
- getting home again
Something that looks like one activity may actually contain many smaller tasks.
What happened earlier can matter too
Capacity can change across the day.
It can also carry over from previous days.
A busy Monday may make Tuesday harder.
A demanding appointment may affect the rest of the afternoon.
Several busy days may mean something normally manageable suddenly feels too much.
Sometimes your body or brain may simply need more recovery.
Try a different question
Instead of:
Try asking: “What might be using my capacity today?”
A quick capacity check
You do not need to work everything out.
Sometimes simply noticing that today is a lower-capacity day is useful information.
Make the task fit the day
When capacity is lower, the choice does not always have to be:
Do everything or do nothing.
There may be a middle option.
You might:
- do a smaller version
- leave part until later
- ask for help
- reduce sensory demands
- take more breaks
- choose the most important part
- make today more of a recovery day
It is to make what you do fit the capacity you actually have.
Capacity can change
Being able to do something sometimes does not automatically mean you can do it all the time.
A simple thing to remember
You do not always need to ask:
“Can I do this?”
You might ask:
“What version of this is manageable today?”
Want to look at capacity more closely?
Explore pacing and capacity, including how activity, recovery and changing demands may fit together.