What you're saying makes sense, but I suspect is different than what the author means to say: "What you do for a living distinctly differs from who you are." There is work and there is job. I want to associate my work with my life, not the job where I currently do my work. I think the original article is telling me to not associate my life with my work.

He also says "learn languages, play music instrument, do sports", but these actually require work and overcoming yourself, and are synergistic with whatever you do 9-5.