I agree with this. Everyone I know who was super aggressive in their career ambitions ended up with a job that stressed them out, had long hours, hurt their relationships, etc. They were basket case overachievers going into it, and ended up with a job that suited that exact aspect of their personality.I'd say most people started and ended up exactly where they should have. Each person has to find their own way and not be beholden to some arbitrary formula dictating where and when you should go through certain rites of passage.
If you don't set your own boundaries, someone else will set them for you.