I decided to go and left very quickly afterwards. I worked in a university, and I put in my notice in July and had gone by September, so I left when there were no students around and a lot of staff were on leave. It was a bit odd not being able to say goodbye to many people, as I'd been there for a lot of years, but in many ways I think that was for the best.
Instead of preparing everything for the oncoming academic year I was able to do a very thorough handover to my successor. I was 57 when I left. I did go to a professional body meeting before I left and was asked to do some consultancy work and dissertation supervision for a different university, which has eased me into retirement. I will do that for as long as they want me, or until I feel that I am too out of touch to do it well. I enjoy it, as it makes me feel relevant, gives me the buzz of working with and around young people, and supplements the meagre pension that I have to live on until the state one kicks in.
I am also able to go in (literally or via the Internet), do the work and go home, rather than manage or take charge of anything other than day to day things within my limited remit, which took a (very little) bit of getting used to but is actually liberating. I have no regrets at all - the job I left was a million miles from the one I went into. Political changes, public attitudes, the massive threats to free speech and the denigration of expertise have made universities quite toxic places to work, but teaching and being around young people (which was always the best part for me) is as rewarding as I've always found it, so the new arrangement has worked out well. I also have lots of free time to indulge my own interests and get involved in things that I enjoy doing.