I am 66. I have done many dumb things. I am delighted that none of them damaged me too much although the potential was there in some cases. Sometimes you can read things and not make the connection. Example, old VW Beetles are a bit tail heavy and when the tail comes around it is very difficult to get it back in line. I had read this any number of times but still went around a wet corner too fast and left the road. I observed a big oak tree getting much bigger during this event. Fortunately for me, the Beetle decided this was a good time for a course change (this had nothing to do with my driving skills) and we wound up in a ditch rather than wrapped around the tree. A buddy pulled me out and off I went.
I am very careful around firearms and tractors. I am especially careful when I chain the tractor to the trailer in order to transport it.