Hi SPQR,
I'm making a lot of assumptions here.
Would it be fair to ask if you're wondering 'what's your purpose'/'why are you here'/'what's it all about'? Are you middle-aged (I don't mean that in a bad way)? By that, I mean, did societal pressure force you into a job immediately after school and, now, 20 yrs later, you'd made it financially but you feel there should be more. You've a nice job, nice partner, nice house, nice car etc but what about 'me'?
What's 'more'? If you're married, perhaps you should talk to your spouse. At one time, the two of you did go through tough times and, now that you're faced with another problem, (s)he should be able to help.
I know of people in their 50's who took up painting as a hobby, took early retirement and went to college to study Philosophy/Social studies etc (Maynooth seems to be good for mature students).
If you're an 'expert' in your area, could you take early retirement and work as an 'angel/mentor' to new businesses or work part-time as a consultant. If you work for a large company, maybe they'll let you work part-time as a trainer.
From your posts, I get the feeling that you're something close to lonely. You have lots of acquaintances but you'd like 'real' friends or 'real' emotional contacts.
Am I totally wide of the mark?
Sluice