At 44 I have the opposite problem. The more I learn, the more I realize I don't know. When I was younger I had the ego of a young person and thought I was always on the cusp of knowing it all. As I got older I realized I was simply unaware. It's a bit cliché, but I started approaching everything, even things I 'knew' with a beginners mindset.

One of activities that really helped trigger this shift was finding something brand new to me at ~40 that I also became passionate about. In my case it was jiu-jitsu, but it can be anything where you're drinking from the firehose again. That mindset spread through everything else in my life.

There is so much out there to know and experience and it makes me sad to realise that there is no way that I'm going to be able to do everything.

I've a history of every couple of years diving deep into an interest. Woodwork was a thing for a few years, then wood turning. Gardening has come and gone a few times.

We spend a lot of time travelling and seeing new areas, slowly in a caravan, we never get to see it all.

Recently I've started running a Dungeons and Dragons game for a couple of my kids and their friends, there can be a lot more depth to that than you may think.

I've got to agree with you that you start to see a lot more things that you are familiar with. This is not really surprising if you are staying in the same environment.

Cycles of initiatives at work seem to come back every 5 or 6 years and they always ignore the same problems... sigh. There is truth in the idea that history repeats and the more things change the more they stay the same.

My suggestion for dealing with the feeling that nothing is new is much the same as everybody. If your world is getting boring and feels like everything is just on repeat, just change your world. Even if that means you are stepping into the unknown or you are taking risks, you are still going to change your experience.

This rings truer to me than anything else posted here. I feel exactly the same way right now, (in my late thirties) as if I suddenly realize I spent my life going deep rather than broad and that there’s a whole world of opportunities out there to be a beginner again, with the same enthusiasm as a much younger person (but now with resources!). The struggle of trying new things has completely changed my outlook.

My advice: try things you thought looked interesting but never thought you’d be good at.

So while something can be new, as one ages even "new" things have elements that are immediately obviously the same as one's past experiences. The older one is, the more of these elements there are. There's a diminishing return, so to speak, in experiencing new things.

If you can build a life around mastering Jiu-Jitsu or learning machining techniques, more power to you.

I'm 47 and in the same place. I have only recently come to grips with the fact that I am a good programmer and I do know what I'm talking about, but there's also so much that I still don't know. I keep learning, but you've got to pick your focus, because you can't possibly learn everything.

Now that I have time, I find an incredible wealth of knowledge and insight about early human history has been developed. I feel like a dim area of my understanding is being illuminated, like exploring a dark attic with a bright flashlight, it is very satisfying, and particularly when pieces fall into place and I have an "aha! so that is what that was all about" moment, it is exciting as well.

Not OP but I don’t feel this way at all.

My oldest son is starting college next year. That alone has been a learning experience! I coach his robotics team, that has been tremendously new experiences.

I’ve gotten three cloud certifications in the past year. I have a huge list of things I want to learn about - assembly language on Linux, FPGAs and about 20 other things.

I could spend 10,000 lifetimes and not scratch the surface of what this world has to offer.

Despite the pleas in responses to continue to explore and experience new things, it seems to me that the experience of being surprised at new things becomes rarer as one ages, with exploration yielding diminishing returns with respect solely to that experience.

Maybe you can fall so deeply into it that you can’t even tell you’re in a rut any more and just think that that’s how the world is, which is a puzzling perspective to those outside of the rut because the complexity and novelty of the world really is literally everywhere.

Not that endless novelty seeking is the be all end all, but it’s there if you want it.

I can use the same example though! Seeing each of my children born left an immense imprint on me. Seeing them experience basic physics for the first time was as novel of an experience for me as experiencing it myself many years earlier.

There are infinite novel experiences awaiting you if you want to seek them.

I think many people take the availability of information we have at our fingertips today for granted. It wasn't always this way. Dig into it, learn something, rinse and repeat.

A single square inch of lawn could provide material for multiple PhDs.

I don't feel that at all.

I've always felt there was a lot to know. I don't think I ever felt the "ego on the cusp of knowing everything" when I was younger, because I knew I hadn't studied most fields and that there was much more I didn't know about. But I did feel like I was getting that way within a few narrow technical fields.

But as I get older the awareness that there's so much still to see, learn and do in just about every area, including those where I'd become something of an expert, just grows and grows, and it is depressing.

As time passes I feel more and more the limited bandwidth of my capabilities, and that nothing I can do begins to scratch the surface of what there is. Some people seem to find a joy in learning. I enjoy it, indeed I can't help it, but I feel so small and my future life feels so short, it gets me down.

Most things I take an interest in, it feels like it will take 300 years to get to grips with them. If anything, I feel an almighty rush to see what tiny part of what there is I can see, be around, and even better, understand and work with, while it's still possible.

So much to see, so little time.

Only if you stop exploring. When you think there's nothing new left to learn, nothing novel to experience, well, you stop looking. Start looking again.

> I notice this especially much with my 3 year old son, for whom everything is fascinating.

Spending time with kids is the best way there is to rediscover your sense of wonder.