Across a Lifetime
Aging, wisdom, and long-term perspective.
CHAPTER 18
Across a Lifetime
Here’s something nobody told me at twenty-five, and I want to lead with it because if you’re in a bad stretch it’s the only thing in this chapter that matters:
This changes.
Not cured. Not outgrown — that’s a myth and we’ll get to it. But the shape of it changes across a life, and for a great many people the hardest part is not the part they’re currently in.
I’m fifty-four. I’ve been through most of the arc. Let me report back from further down the road.
Childhood: the worst fit you will ever face
I want to say this plainly because I’ve never seen it written down:
School is the single worst-matched environment most of us will ever be placed in, and it’s compulsory, and it lasts thirteen years.
Go back to Chapter 15’s six factors. Same room every day. Same schedule. Slow feedback — weeks between doing the work and hearing about it. Body required to be still. No control over sequence. Almost entirely procedure rather than problems.
That’s zero out of six. There is no adult job that scores that badly, and if there were, you could quit.
So if you’re a parent watching your kid struggle and wondering whether this is what the rest of their life looks like: no. Statistically, this is the bottom. They are in the most hostile environment they will ever be legally required to attend, and it ends.
That’s not optimism, it’s structure.
The twenties: when the scaffolding comes off
Here’s a pattern I’ve watched play out over and over, including in myself.
A lot of us do adequately in high school and then fall apart at university, or in the first real job, and nobody can work out why. The demands didn’t get harder, exactly. What happened was that all the external structure disappeared at once.
School supplies structure constantly — bells, a fixed timetable, someone noticing you’re absent, homework due tomorrow rather than in three months. It’s a bad fit and it’s also a massive external scaffold, and Chapter 13 already told you that external scaffolding is the entire method.
Then at eighteen you get handed total freedom and a long-horizon deadline and nobody checking on you, and the thing that was holding you up is gone.
If that was you, you weren’t lazy and you didn’t “waste your potential.” You had the scaffolding removed and hadn’t yet learned to build your own — which is a thing nobody teaches, because most people don’t need it taught.
The thirties and forties: the crunch
This is where it usually gets hardest, and it’s where most late diagnoses happen. Mine was in there.
Look at what lands in that window. Career complexity increasing. Mortgage. Kids, maybe. Aging parents, maybe. Multiple competing systems that all require tracking, none of which you can drop.
Executive function demand peaks in midlife. All of it lands at once, and it’s the exact resource that’s in short supply.
That’s why people who “managed fine” for years suddenly can’t. Nothing got worse. The load went up past what the compensating strategies could carry, and the strategies were never built for this weight.
If you’re in that stretch right now and you feel like you’re failing at things you used to handle: you’re not deteriorating. You’re at the peak of the demand curve. It comes down.
Fifty and after: the part I can actually report
I’m going to be careful here and tell you only what I’ve lived.
It got better. Substantially. Not because the wiring changed — I still lose things, still can’t feel time, still surface at 3am from work nobody asked for. The traits are exactly where they were.
Four things changed, and none of them are inspirational.
One: I found the placement. Thirty years in one trade, two roles that fit for different reasons. That’s Chapter 5’s whole thesis playing out slowly. Most of us find it eventually, just by elimination — you accumulate enough evidence about what doesn’t work that you drift toward what does.
Two: I built the systems. Decades of accumulated scaffolding. Not one good system — dozens of ugly ones, replaced as they died. That’s Chapter 13, and it compounds.
Three: expertise started doing the work. This one is underrated. When you know a domain deeply, you stop running on working memory and start running on pattern recognition. I can look at a connection detail and know it’s wrong without consciously checking, and that costs me almost nothing. Twenty years of accumulated pattern is a form of external memory that happens to live inside your head.
Four: I stopped spending energy trying to be normal. That budget was enormous and I’d been paying it since third grade. Getting it back was like a raise.
Note that three of those four are things you build, not things that happen to you. The improvement isn’t age. It’s accumulation. Which is genuinely good news, because it means it isn’t luck and you can start now.
What doesn’t improve, honestly
Two corrections so this doesn’t read as a promise.
Hyperactivity doesn’t disappear — it goes internal. The kid who couldn’t stay in his seat becomes the adult who looks perfectly still and has a mind that will not stop. This is why people think they outgrew it. They didn’t. It stopped being visible, which is not the same thing, and the 2am version is often worse than the classroom version because nobody can see it to sympathize.
And in older age it gets misread. Losing things, forgetting names, difficulty focusing — in a seventy-year-old, everybody including the seventy-year-old assumes that’s aging, or worse, and gets frightened. Sometimes it’s just the same lifelong pattern in a body that’s older. Older adults with this wiring are badly underdiagnosed, partly because the whole field was built around children and partly because everyone stops asking.
If that’s you or your parent: it’s worth asking whether this has been the pattern all along, rather than assuming the worst.
The accounting
I don’t want to end this chapter with a clean upward line, because that’s not what a life looks like.
Getting better doesn’t undo what happened on the way. The jobs that ended badly, the money that went, the friendships that thinned out, the years spent believing something was fundamentally wrong with me. Those are real and I don’t get them back, and if you’re further along than twenty-five you’ve got your own version of that list.
There’s a particular grief in working something out at fifty that would have been useful at fifteen. I’ve felt it writing this book. Every chapter has had a moment where I thought: this would have changed everything, and nobody knew to tell me.
That’s allowed. Feel it. It’s a legitimate loss.
And then — and this is the only useful thing to do with it — remember that the version of you reading this is the earliest version that will ever exist again. Whatever age that is. Twenty-five is early. Fifty is early. I was fifty-one when I started writing any of this down, and it was early enough to be worth doing.
To the twenty-five-year-old
If you’re in the part where nothing works and you’re watching everyone your age get traction, here’s what I’d tell you.
You are in the hardest stretch, structurally — freedom without scaffolding, before you’ve learned to build your own, and before you’ve found the room where the wiring pays.
Both of those are things you acquire, not things you’re born with. Most of us get them. It’s slow and unglamorous and it mostly happens by accumulation, which is the least satisfying answer available and happens to be the true one.
It got better for me. Not because I improved. Because I stopped fighting the wiring and started building around it — and thirty years of building around something adds up to a life that mostly fits.
You’ve got the instructions now. That’s roughly thirty years earlier than I had them.
Two chapters left. The next one is about the word you’ve been using for yourself this whole time, and whether it belongs to you or to someone else.