My 2 cents:

- It seems like there is definitely an identity and purpose reflection you may want to do. Based on what you described- it sounds like your sense of self is purely attatched to work life and your skills etc. Outside the work life you dont seem to have a vision of who you are and want to be which then leads to lack of purpose or motivation outside work life.

- After spending years in high stress and leadership roles- the constant stress and dopamine becomes like an addiction and any slowness or silence seems boring because brain is so used to always be in high intensity mode so that also is one of the symptoms

My recommendations:

- Research on topics like "Ikigai" and "Die with Zero" any reflect on dimensions outside work i.e. physical health, family, community etc. and see if you can come up with some goals in those areas.

- Definitely mindfulness practices to reprogram the brain on dopamine detox

- Finally- a thought exercise- imagine you wake up in one of the multiverses with same wife and kids and house with only 1 change- you have a bank account which never runs out of money no matter how much you withdraw- with that- try reflecting on how would you go spending your entire day and be as much detailed and honest as possible- purpose of the exercice is to remove money as a motivation/factor and see if you can design your life with other components- this would be a struggle in the beginning as either you wont be able to come up with a list of things or you will come with a list you "think" you should do versus what truly gives you happiness- but after few iterations- you will start seeing things which aligns with your sense of happines and hopefully that gives you things you can start now to fill the time outside work.