@pixelsage You have money, lots of qualifications and live in an echo chamber because of past « obligations » (see ex-wife making you feel like you are not enough).
So, even if you don’t really want to accept it, you are bitter about it and try to be a better person by earning more. Unconsciously, you think that it would make you more happy, open more opportunities.
Try to find some job in Europe, maybe closer to family ? Reconnect with childhood friends? Don’t focus on money, it won’t make you happier being FIRE now.
Make a change, you have a big cushion nest behind you.
You miss connections, relationships, not money or a better job
All in all, a therapist would be the first thing to do to help you figure out what to do, you have the luxury of having choice, even if you don’t see it because you feel pressured to earn more and more