You lost some things along the way. Value of life, excitement in overcoming a challenge, need and value of other people.
This may sound odd to you, but I think you're bored and lonely. The world is something that happens around you and you visit it, and leave.
I am retired, younger friends living in Las Vegas, financially very secure, but not wealthy, but I devoted many years to an active career and prefer a slower pace now. I know a semi-retired real estate investor with about 6 or 7 condos around the world in nice locations. He has many millions of dollars available, and still does a real estate deal here and there and travels among his apartments.
You need your own purpose, whatever it is you choose to make it. You may need true friends and a life partner that's the right one. You need an interest and you must assess what that would be.
add- I can't recommend what should be personal from a huge list. Part of it..
Education and classes, a collection of rare items, a hobby, sport, or any art form to participate or observe, a noble charity to be a part of, an event planning, visit friends and relatives or make new ones, travel or explore, seek a faith, lending and investing in new ideas, what can you make a difference in the world?, set up a scholarship fund and be a part of the selection process, - - - -