I'm glad this worked out for you
As a small counter anecdote I guess, I was this person in my 20s too. I arranged my whole life around work, constantly trying to get that next rung. Then I burned out, quit my job, moved to a new city and was unemployed for a year. My career has been pretty decent since then, but it almost had nothing to do with the hard work in my 20s. It's just that where I was working before didn't reward the hard work and where I am now rewards the work I do even though I don't work nearly as hard as I used to
Anyways. All I'm really saying is if you're going to work yourself to the bone trying to get ahead, make sure to take a breath once in a while and look around. Check in with yourself to ensure that the hard work is actually paying off, building the life you want. Otherwise it's just trading your youth and getting nothing in return