You lost it over something that didn't even matter. Or you went quiet and shut down when they needed you. Either way, you can't shake the feeling that you failed them as a dad.
That feeling has a name.
Trusted by 14,000+ dads on Instagram — @thesummitdad
You were outside your Window of Tolerance. It happens to the best dads out there, not because something's wrong with you, but because your window hasn't had the chance to grow yet.
I first came across Window of Tolerance in foster care training, the trauma-informed approach to parenting. I never thought it would explain my own living room. But it does.
Once I saw how small my own window had gotten, I knew something had to change.
So I took it one stone at a time. The energy, the training, time for myself, knowing my own pattern. Those became the four pillars.
Then I put it all into a book. ↓
Everything I use to stay inside my window. For fathers ready to widen theirs too.
THE BOOK
The Open Window
What the window is, why it closes, and how to keep it open. Page by page.
What the Window Is
Psychiatrist Dr. Dan Siegel named it the window of tolerance: the space where you can handle life. I learned it in my foster parent training, but I only used it for the kids. Never on myself. Then one day I realised it was about me too, and everything changed. The book starts there, with the moment it finally made sense.
Why It Closes
It isn't random, and it isn't who you are. It's what the day has taken from you before you walk through the door. A short night, a skipped meal, a comment you swallowed at work. None of it feels like much on its own. But it piles up, and by evening there's no room left for the people you love most.
The research backs this up. A tired brain reacts more strongly to stress, and running on empty makes us shorter with the people closest to us. The book walks you through it, with sources, so you finally understand what's happening, and why it was never about being a bad dad.
The Four Pillars
Energy Windows, Strength, Recharge, and Know Yourself. What each one is, why it holds your window open, and how I use it in a normal week.
Energy and Your Windows
What energy windows actually are, why timing matters as much as the food itself, and how the three windows carry you through the day. Then how much your own body needs, and the small habits that make it work.
When It Closes Anyway
Because it will. Mine still does. The signals to catch it before it happens, and how to repair after, built on Ed Tronick's research: even in loving families, parents and babies are only in sync about a third of the time. What builds strong kids isn't a perfect dad. It's a dad who comes back.
Your First Week
A simple plan for your first seven days, one small stone a day. Nothing big, nothing hard. Just small steps that get the windows into your normal week, so by day seven you can feel the difference in your evenings.
50 Recipes
Sorted by window, each with energy, macros, a photo, and a why-it-works note. The ones I eat most are marked with a heart. The Greek Chicken Bowl is what I often reach for in the morning, and the Kebab Roll is one my wife and I keep coming back to in the evening. Every one logs straight into The Summit App in seconds.
Reading about it is one thing. Living it is another. The book explains your window, why it closes, and the four pillars that keep it open. The app is where you live them every day, and the book is inside the app too. ↓
One app. Every pillar. Every day.
THE APP
The Summit App
The app is where you live it all.
Log Your Energy Windows
Every recipe from the book logs straight into the app in seconds, so Pillar One isn't just something you read. It becomes something you actually do.
Strength, Pillar Two
8 exercises with form videos, two sessions a week. That's it. You don't need to know where to start. On your first session, the app tells you exactly what to do, and guides you through your first four sessions to find the right weights for you. After that, it guides you every time: try one more rep, or it's time to go up in weight. A graph shows your progress over time.
This is how I actually stay in shape and watch myself grow, mentally and physically, without it taking over my whole week. It doesn't take time away from my family. It gives them more of me. Getting stronger means more window, more capacity for the people who need me.
Recharge, Pillar Three
You choose your own Recharge in the app, whatever actually gives you energy back. Mine is 8,000 steps, often a walk in the mountains near home. I log it myself, so Pillar Three isn't just something I know matters. It's something I can see adding up.
Know Yourself, Pillar Four
This is the one that changed things most for me. Every time my window closes, I log a Window Repair: what happened, what set it off, what would help next time. Over time, the app shows my pattern, what keeps closing my window, and when.
Once I can see it, I catch myself in the moment. "I'm here right now." And from there, it's so much easier to stay steady.
Pillar Foundation
Log your Energy Windows, your Recharge, your water, and when you Connect with the people you love, so it doesn't get lost in a busy week. All four sit together under Pillar Foundation, with a quiet kind of leveling up built in. Nothing loud, just proof that you're moving in the right direction.
Plus a few more tools that make it easier, streak protection, all built to keep you inside your window.
What dads are saying
“it hit me in my chest... bills, expectation, love, exhaustion, lack of sleep, post-trauma, everything like a storm, and it sometimes makes you snap.”
@zimzimaproductions
“I'll definitely try the writing it down thing!! That helps a ton picking up on things”
@fitnessm_nava25
“I get this and I wish I could see it coming and stop it before it happens.”
Mark
THE OPEN WINDOW
$49
The book alone. The window, the science behind it, all four pillars, and 50 recipes. To log your days and your Window Repairs, you'll want the app.
Everything in the book, plus the app, with the book inside it. Log your Energy Windows, your Strength, your own Recharge, and your Window Repairs, so you can see your pattern and catch it before it happens.
1. Get instant access→2. Download your book and install the app→3. Start widening your window tonight
Questions, answered
Do I need the app, or is the book enough?
The book gives you the full picture: what the window of tolerance is, the research behind why it closes, all four pillars, what to do when it closes anyway, your own energy number, and all 50 recipes. That's everything you need to understand it and start.
But if you really want to live it, not just read it, the app is where that happens. You log your days, track your Window Repairs, find everything you need for strength training, and watch your own pattern build over time. And the book is inside the app too.
Where do I learn how the four pillars work?
The book explains them: what each pillar is, why it holds your window open, and how I use it. The app is the tool you use them with, every day.
How do I get the app?
Right after checkout, you get the link by email. Open it on your phone, tap "Add to Home Screen", and it sits there next to your other apps. That's it.
What if I lose my phone or switch phones?
Your data lives only on your device, nowhere else, so it's completely private. The app reminds you to back it up. One tap copies a backup key you can save and restore from anytime, so switching phones doesn't mean losing your progress.
Do I need a gym?
No. You just need to work all the major muscles in your body, twice a week, that's it. The app shows you 8 exercises with form videos, and each one lists other ways to do it too, so you can swap in what you've got. I started at home with a couple of dumbbells.
What if I miss a day or go on vacation?
Life happens. You get one Streak Freeze a week, a 24-hour pause that protects your streak while you take care of what matters. On vacation I don't even use it religiously. My streak drops sometimes, and I just come back to it afterward. That's the point: not perfection, just coming back.
How does the app know what to eat?
You tell it a little about yourself once, and it shows how much energy your body needs, spread across your three windows. But the number isn't the point. It's there to help you learn your own rhythm, what gives you energy and when, the same way I did. Once that clicks, you stop looking. You just know.
Do I need to cut out alcohol or treats completely?
No. We're climbers, not monks. Enjoyment is part of a life you can actually keep living. It's an 80/20 rhythm, not a prison. I'll enjoy a glass of wine with my wife, and that's not going anywhere. Just know alcohol isn't free: it affects your sleep, your mood, and how present you are the next day. Lean toward light or sugar-free, and stop before it costs you tomorrow.
Does the app work in kg or lbs?
Yes, both. Switch anytime in Training, and everything updates with it: your Load, your Records, your Progress chart.
What about notifications?
Reminders work while the app is open: a nudge when a new window starts, or in the evening if your Pillar Foundation is still waiting.
What's your refund policy?
If it's not for you, message me within 30 days at Johannes@thesummitdad.com and I'll refund you. No hoops to jump through.
Johannes, The Summit Dad
A foster dad, showing up for five kids. There was a point where I didn't recognize myself anymore, body or soul. I built this because I needed it myself, not as theory.
Your window shapes more of your day than you'd think. This is how I learned to keep mine open.
