Earlier quoted context omitted.
Juniors fall into this pitfall so quick. Our newest hire actually set boundaries early on and I was pleasantly surprised
Disagree. This kind of comment is furtively pulling up the ladder behind you. Do as I say not as I do. Junior is the time to learn as much as possible and take risky bets (and suffer accordingly). When I was in a junior in a factory, the night shift knew me well. Nowadays, I've pared it back to 50 or so hours per week, because I now have a family, which is fine but it came at the cost of basically zero time to learn…
As you get to the downswing of your career, you should have already worked and made enough mistakes to have most of your experience. You must cruise on that experience when you are older.
When you are old, that is not the time to work and make mistakes.
That is, most of the heavy work must be done as early as you can. Eat that frog.