Of course you are most welcome to share your observations.
I am a fairly level headed guy, though open to alternative thinking. For me it highlights the value of how we think about and approach life. It does mention setbacks and negative stuff happening. Again it is how we approach them and think about them that is important IMO. I am not an expert on this but I shared it as part of my growth. If it does work I believe it does not work on other people.We can strive towards a loving R but not control who that is with. So by fighting for it to be our spouses, we may actually be blocking "destiny"!
As for the tip it gave about improvement in R, I came across similar sseveral times. It has to create a better atmosphere than resentment or sadness.
R 25 years M 14 years S11 & S13 Working on it alone since Oct 2014 M in trouble a lot earlier (~2 years) Feb 2016. 1st R chat in a yr. Next R chat Aug'17 Still together