Since reaching the mid-60's, I thought that my decrease in accuracy was due to a combination of "old age" factors. Ya'll know what I mean...failing eyesight, sore shoulders, bow weight too heavy, stiff fingers, etc.
I never really knew that much about it but there are several different "kinds" of it. He gave his copy of the book "Instinctive Archery Insights by Jay Kidwell, Ph.D." Since reading it and re-reading it, I can say that it has really helped my shooting. It ain't been easy. I still struggle but I am getting more consistent. My draw length has also increased by nearly 3/4 of an inch. I highly recommend that you get a copy and read it.
But you don't have target panic, do you? Well, this will keep you from getting it! Like I said, you're never too old to learn something new!