Thanks for sharing this. (I recall replying to your introductory post.) I'm not a mental health professional. But, to my mind, this sounds like a pretty classic case of depression. So assuming that is the case, it seems to me, the first priority may need to be to address your depression either via some variety of mental health therapy or antidepressants or both. It may be that until you address your underlying depression it may be unlikely you'll be able to find your passion or purpose in life.

Here are links to a dozen articles from Psych Central's archives. The first 3 are on the subject of depression including 1 that addresses the topic of depression following divorce. The next 2 talk about what to do when you feel lost (following divorce & also in general.) The next 4 are on the subject of motivation. Then there's one on exercising when you're depressed. And finally there are 2 on finding your purpose in life:

Depression: Symptoms, Types & Treatments | Psych Central

Living with Depression: A Guide for Coping with Depressive Feelings | Psych Central

How To Deal With Depression After Divorce: 5 Actionable Tips

What to Do When You Feel Lost After Divorce

So, You're Lost? The Advice You'd Never Expect

https://psychcentral.com/blog/tips-f...ure-depressed/

https://blogs.psychcentral.com/relat...hen-depressed/

https://psychcentral.com/blog/5-step...dium=popular17

https://psychcentral.com/blog/warnin...dium=popular17

https://psychcentral.com/blog/exerci...ure-depressed/

https://blogs.psychcentral.com/best-...-life-purpose/

https://psychcentral.com/lib/6-clues...passion/?all=1

Happy reading!