If it helps at all, my 40s were my favorite decade so far. You sound like a person who really has a tremendous amount to offer. You just need to figure out what you want to do and what gives you joy. I am not a magical genius who can figure that out for you, but since you can definitely afford it, I'd agree with the folks who are suggesting a vacation or some kind of volunteer work.
You mention how much of your life you have devoted to your professional development. Perhaps it's time to be selfish and think just about you and your personal development.
I also don't think ketamine, or psilocybin, would be a bad idea. Many people have gotten lasting benefit, and relief from depression, out of those substances. If you do try one of them, do so in a peaceful, controlled setting, with a very trusted person around. And a lot of art materials! ;)
You mention how much of your life you have devoted to your professional development. Perhaps it's time to be selfish and think just about you and your personal development.
I also don't think ketamine, or psilocybin, would be a bad idea. Many people have gotten lasting benefit, and relief from depression, out of those substances. If you do try one of them, do so in a peaceful, controlled setting, with a very trusted person around. And a lot of art materials! ;)