>- The primary lesson I learnt is that it doesn't matter if you work hard. Nobody notices, and even if they do you will likely not get anything out of it. Do your job, but don't kill yourself over it. Work-life balance is king.

This. And the intrinsic metric does not necessarily align to the company's until much further down the road or sometimes not at all. Hard lesson for me to learn after a score at the same company and the health insurance stays the same regardless.