Dear Reader,

Have you ever felt like you were holding everything together just fine—managing the juggle, getting things done—only to find yourself completely overwhelmed or snapping over something tiny a moment later?

When this happens, it's easy to fall into self-criticism and wonder why our patience or resilience suddenly disappeared.

Following on from my reflection last week about the dance between striving and stillness, there is an important physiological reality underneath it all: our Window of Tolerance.

The Window of Tolerance, coined by Dr Dan Siegel, describes the optimal zone of nervous system arousal (i.e., how activated it should be) where we can effectively manage stress, think clearly, connect meaningfully with others, and respond rather than react.

When we find ourselves outside of the window, our nervous system is either:
- hyper-activated (think fight or flight), or
- hypo-activated (think freeze or shutdown).
This can make coping with life significantly more difficult.

Being within the window is not so much about being 'zen' all the time, but rather about having a grounded sense of 'okayness' and the capacity to handle whatever life throws at you without collapsing or blowing up.

When we are within our window, we can navigate the daily juggle, make intentional decisions, and successfully hold that balance between doing and being.

But here is the catch: our window is not static. It is ever-changing.

Some weeks, after a good sleep, supportive connection, and nourishing food, our window is wide and resilient. Other times—when we are run down, navigating illness, constantly pushing without pause, or even have a history of hardship —our window narrows.

When our window is narrow, our true physiological capacity is drastically reduced. We don't have the buffer we think we do. And it takes very little to bump us outside of it:

• Tipping above the window (hyper-arousal) means we swing into overwhelm, racing thoughts, panic, irritability, or snapping at the people we love.
• Tipping below the window (hypo-arousal) means we drop into shutdown, brain fog, apathy, or feeling numb and flat.

Finding that dynamic balance between presence and striving comes down to tuning into where we actually are in this window.

The good news is that instead of waiting until we crash or blow out, we can develop skills in connecting back to ourselves to stop (or help prevent) the spiral early:

• How wide or narrow is my window today?
• What are the early, subtle warning signs that I’m drifting toward the edges?
• What can I do to nurture and gently widen my window regularly?
• What do I need to do to down-regulate or ground myself when I notice I’ve stepped outside of it?

Honouring our capacity isn't about giving up on our goals or permanently checking out.

It’s about listening honestly to our physiology and adjusting our pacing accordingly—striving when we have the genuine bandwidth, and prioritising meaningful rest when our window needs tending.

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To help you map your own warning signs and get clear on your nervous system's signals, I’ve put together a free reflection resource: Mapping Your Window of Tolerance.

Download your free Window of Tolerance worksheet here

I encourage you to take a gentle moment this weekend to check in with yourself. Where is your window sitting right now?

For those wanting to dive deeper into these themes and explore the various types of rest and when to utilise them, join the waitlist below for our upcoming Workshop Series:

Reclaiming Rest commencing in October.

October Workshop Series: Reclaiming Rest Register Your Interest

With love and warmth, Zac ♥

Dr Zac Elizabeth Buchanan | Clinical Psychologist​
The Return
​drzacelizabeth.com​