Have you talked to a financial advisor - they should be able to give you an indication of what you need to retire. A lot depends on your lifestyle and the cost of living where you are.
I am single, self-employed and made a major cut in the work I took on at 64. Still work a little but the peace of mind I now have is worth watching what I spend now.
I never don't have enough to keep me occupied now, of course I still do a lot of the volunteer work I did before.
I know that if I need to I can take on work anytime, like you I just don't want to - after working all my life I'm enjoying the me time.