I just stepped down from my operational role and retired to the board on Jan 1. It does feel great! Wishing you much joy and rewarding moments in this new chapter!
I want to add to your points a and b. In my experience, what is also needed is the dream to change and do something else with your life, and the courage to actually execute. I know many people with money and a plan for their „afterlife“ who never dare and do it.
Tipping my hat for your decision to do so!
All the best, Daniel