We never know what fires a person up..although the judge painted and appeared to have found his passion..but people are complex and have many desires needs and wants.We have a friend who still goes into his garage haulage business daily..he is wealthy so its not for cash reasons..he handed over to his sons..he built his own home took up thr violin at 50.. has a lovely greenhouse a garden he designed..he is just wired for being in the buzz of the company he built..
I was told years ago that we each should work out their own "salvation" and this is evident from what we are putting into this discussion..
disengaging is discussed in sociology where a person slowly steps back from a career in stages..but it is not universal and this is shown here.