Yep. I started working full-time at 21 in 2010 and didn't stop until the beginning of 2020. Currently on a sabbatical (kinda) and passively looking for a new job in EU. In parallel with working full-time and being highly productive on the job (always was a top performer, thanks to mild OCD, I guess), I also married my gf, who gave birth to my son, when I was 24, and did my best to be a good husband and father all along. On top of that, I spent huge amounts of time (at nights, mostly) studying online courses, reading CS books, learning stuff, etc. Finally, at ages 27-30 I was quite involved with open source, in particular, my own projects: bittorrent library, which atm has almost 2K stars on github, and a face detection engine in rust.

All this said, it was definitely a tough period in my life, and I'm kind of happy, that it's over. My son is going to school this fall and does not require as much attention as when he was a toddler. My projects are kinda "finished", meaning that I'm not actively working on them anymore. If I'm reading something nowadays, it's mostly history, philosophy and natural sciences. Having time for myself, playing an occasional video game, going out to skate or just hang around in the city is important to keep sane and not lose the desire to work anymore.

So yeah, I've learnt first hand, what "hard work" really means, and learnt to value free time, leisure and hobbies.