They say men define themselves by what they do.
Women define themselves by their relationships....so maybe men would feel differently than women?
Anyway, I felt much better after I "left" work. I neither retired or was let go....I quit. It didn't matter in my job whether I worked one year or one hundred years....I would get no retirement benefit anyway.
So I opted for my health and I have much more energy and am far less stressed. I am able to do the things that before was too tired to do.
Fortunately I have a monthly income from another source that sustains me. Otherwise I might feel stressed out (which would be defeating the purpose)
I worked in an office environment also and the drama and pettiness were getting to me. My 75 year old boss was getting forgetful and would blame me and my MS as if I was the one losing it. And he'd make reference to it to other employees behind my back.
If you feel like you love your job and the people you work with, then it may be very hard to give it up.
But if it is stressful, then you will feel better.