The way I live my life is predicated along these lines. I "retired" many times in my life, it lasts 7 years on average, I am not wealthy, I have never been interested in travel, but spent a lot of quality time with my kids and undertook many projects I believe in. The idea is to think back on my death bed and say "no regrets".

I am retired and can honestly say I really enjoyed my varied working life I don't miss it because it gave me a lot of skills I still use.

Your client and the old saying are right. I've literally watched a colleague work himself to death. It would have been better for him and his family if he had been able to achieve some balance.

That's something I should seriously take into consideration. All I really do is work.
I don't go out much. After a shift, I go home. Unwind a little bit and eventually pass out.. Only to repeat the same process very and over again.