Congratulations, I stopped 8 years ago at 55 and don't regret a second of it. Became bored sat at home so after 8 weeks got a part time job driving a local schools mini bus and had a great 3 years with the kids working 20 hours a week, then the cut backs so 6 months at home before a full time post redesigning and delivering child protection training, out of my comfort zone (I knew the training bit just not the child protection bit) so that fired up the grey cells. After that heavily into Morgan work....as in 5 days a month on average.....thing is Neil something always needs doing.
I discovered also that it's absolutely true that 'Work expands to fill the time available'.....I can spend an entire morning changing a set of spark plugs if I need to ;-).
Have fun, nothing to fear!