I'm 66, still working full-time (need to, financially, but would probably also do so if I didn't!), and am told that I look in my mid-fifties. I carry a bit more weight than most would like (top end of BMI normal range) and I thoroughly recommend this - it keeps the skin on the face 'plumped-up' which makes one look younger.
I have short hair which is cut every 5 weeks, into a very modern style, and I have blue and purple highlights.
I'm very fussy about looking after my face; never wear make-up (other than on eyes) but always cleanse and moisturise (another Boots skincare fan). I would never have any anti-aging procedures (unless medically necessary) - I think they make everyone look the same and take all the character out of a face (just my opinion).
I try very hard to eat a healthy diet (have been vegetarian since my twenties) but focus most on it being balanced. I don't stress about food!
Most of all, though, for me it's about attitude. I'm a person of faith, and believe that everything we have comes from God, so I practice gratitude for all the good things and ask for help with the difficult bits. And, at 66, I'm more aware with each passing month that every day is a bonus, so I try to enjoy them, hour by hour, and not worry about what's to come.