It's not so bad. If you keep an ee on your health and eat proper food, lots of veg, quality meat, the odd glass of wine, be careful about taking too many pills, you should be fine.
I suggest you keep mobile too. I'm well over 70 but still doing PPI in research, inspecting hospital units to be sure they are patient friendly, lots of research activities.
The odd hobby, too, like reading, sewing, gaming, and helping out children and grandchildren when needed.
Now I've had vision correction surgery I can go back to driving once all healed up and stable.
There's lots of good things still in life, and I'm busier than when I was working. So good luck, there's lots of life in you yet.