I did that "count back" as you say in a tough year in 2022, and I found there is a pattern that I have a challenging year or feeling of intense attack every 8 years.
For me it was 2006, 2014, 2022.
But the other cycle is 12 years. I feel like I could divide my life spirituality/maturity-wise into 12 year "eras".
I'm just at the start of a new 12 years.