This will probably be a contraversial opinion but I think ADHD is currently the "in" thing to be aware of, and to consider whether you have, when in fact it's a perfectly understandable response for our brains to have, having been bombarded 24 hours a day with information. Thankyou, Tim Berners-Lee and the World Wide Web.
Life was simpler pre-internet. People just got on with their day, going to work, looking after kids, cleaning their houses, shopping, chatting to the neighbours. You might learn that some of your neighbours may have had a slightly different routine to yours or a hobby you'd never done before which might have given you pause for thought, but there was no overthinking every second of your life, doubting how you've always done something because you'd seen some stupid influencer or facebook reel with someone you don't even know, whose opinion you can't possibly trust for this reason, recommending you do it a different way or use a different product. There was no Facebook with people we are barely acquainted with sharing photos of their "perfect" nights out/holidays/partners/exciting lifestyle or hobby or fitness routing, always making us feel that we could try their way and look as happy as that.
There were no 24 hour TV with multiple channels which it's far too easy to flick through for half an hour without even having watched a whole programme. news channels which some people find they are kind of addicted to, keeping them on in the background just in case they "miss something". There were no lifestyle shows apart from the odd cooking show. (I'm thinking of my childhood here in the 70s and 80s.) So no-one telling you how you should be living your life, how you should be decorating your house, how you should be parenting your child, how you should be dressing or looking 10 years younger.
You simply just lived your life and didn't overthink the way you were doing it. Even booking a holiday, you flicked through a few holidays brochures, rang and booked it then waited for your tickets to arrive in the post. No wasting hours and hours overanalysing on Tripadvisor, Kayak, no tussling with bloody dynamic pricing, because you just paid what was printed in the brochure and that was your holiday booked. The result of that simpler life was that people were generally more content with their lot, didn't compare themselves to others all the time, didn't feel like they had to be "productive" all the time or copy the latest trend. Didn't flit from one thing to the other trying to achieve this.
I was a student in 1992 and marvelled at the fact that I could type a message on my screen and it then appeared on my friend's screen over the other side of the classroom. That was witchcraft to me and I became fascinated with how you could access information and knowledge, for free, about almost any subject, from a computer on the other side of the world. The genie is out the bottle now and we can never go back to the simpler pre-internet life, but we do need to be more mindful of how it and therefore modern society generally, has affected our brains and ability to be content. It's been, and continues to be, particularly bad for individuals who have a natural tendance to procrastinate or be a bit impulsive. How many people in less developed countries have even heard of ADHD never mind sit wondering if they could have it? They just get up, live their day, go to bed, and same again next day. And are often all the happier for it.