I retired just before my 60th birthday. I worked in a large multi GPs practice for over 12 years, as admin/receptionist. Mostly I was happy there, but the stresses of the work ( some patients were incredibly rude and even threatening, when they couldn't get their own way), and the advent of a new practice manager tipped me over the edge towards leaving.
I planned my escape over 3 years. I gradually reduced my hours bit by bit, until I was on 2.5 days a week. Knowing I wouldn't be able to claim my SP until 66, I squirreled away every penny I could into my own 'retirement' fund. I worked out how much I needed to save before I left, so that when I did, I could draw on my fund, without asking MrLP to pay for everything. ( He would have done so willingly, but I felt it was important to contribute to the expenses as before.)
My plan has worked well. I will be able to claim my SP this year ( September), and I still have a fair amount left in my retirement account. I appreciate that MrLP is still working, possibly for another 5 years, so we have a decent income.
I couldn't have stayed there for another 6 years, but it was stressful mentally, rather than physically. Up until the year I left, our large staff ( both medical and admin) had been very stable. Within a year of my leaving, it all changed, and now there are very few of my former colleagues left there.
Take care xx