Comment by WHA8m

There is probably a reason for your fatigue. You need to find it. You've probably guessed it beforehand: It can be physical (go see a doctor) or mental (go see a therapist). Make use of them, even though it might turn out not helpful afterwards. You said you're financially stable, so even if you're in US, you can go and see doctor and therapist.

>I generally feel that I won the game of life.

Reason a lot about that. Why do you think that is? What's important to you? Any connections with anything that you can observe?

From what you posted, you seem like a well functioning human being. Relationship, job, money, exercise, sleep, diet(?). I'm not sure a habit or another exercise would help you. Maybe try to approach this a bit more abstract and not try to fight the symptoms - that was my first thought reading this... Maybe this somewhat helps you a tiny step. I wish you very well!