I was forced to retire early on ill-health grounds and as an academic found my brain going to mush after 3 months, especially as I felt I could still work but not at the pace I was doing. I began working from home, doing work associated with what I had done all my life, but not under the stressful deadlines imposed by the faceless organisation. Without that outlet I would have gone mad - so my advice to you is much like that of other contributors - take the incremental route to retirement, get a proper work/life balance back again, but keep an open mind. It may be that when you do retire completely, you still want a little something in your life and you may even consider taking up a new and different paid job a couple of days a week, or doing some voluntary work.
Do you get a mot at the doctors?
What a difference a day makes 😢😢


