Or just plain lack of motivation?
I worked really hard and contientiously for c. 30 years. During that time I also raised a family and was fully committed to doing that well and ran a home I cared about and was proud of.
Then as I approached 50, none of it mattered any more. Then lockdown came and it mattered even less, DC grew up and DH died and I couldn't find it in me to care about anything. There was no "need" to work hard at anything. I started slacking at work, but no one seemed to notice or care, so even that didn't matter. Eventually I took early retirement, thinking I'd use the time to get fit(ter), get the house and garden in shape and learn something new.
I run and I've stuck with that, so I'm still physically fit, but since I stopped working, even that im less committed to.
I have a million things I could be doing with my time, things I want to do, but I'm not doing them.
Fwiw im on HRT, it's helped a lot with sleep but not with the rest.
I know my phone addiction doesn't help....
I need a plan I can stick to.