I think maybe expectations have changed - when I think about how we lived when I was a kid, most people would consider it intolerable, but we didn't think twice and plenty of people were in the same boat (no central heating, one old car that my dad maintained, walking everywhere, trips had to be free never stopping in a coffee shop for tea and cake (or at least not until I was a teenager, and we had a little more money), no holidays until I was a teen - and even then it was camping etc. No big pets (guinea pig/rabbit, no cats or dogs as too expensive)
My kids have everything they need, but have had had to deal with the heating being out for months, or living 4 of us to a tiny flat, so they're pretty resilient/tolerant of hardship too, albeit also comfortable walking into a hotel or restaurant unlike me at their age.
In some ways it was easier 20 years ago - my student loans were lower, and so was my rent (mind you I lived miles away and cycled in - couldn't afford to live on campus even then), but I worked throughout still.
I've largely made my own luck - being prepared to move to the next good job, go above and beyond where it benefitted etc. to get where I am - sure, there's some luck, but my sisters wouldn't consider swapping their less chaotic lives for mine - even for the extra money, it all depends how you define 'standard of living' - for me, it was knowing I had enough money to see the kids through, to go to the supermarket and not have to worry, and if that meant moving country, or working late then I did it. They didn't.