In the end, it is their path to walk and they make their own choices. I believe that other people can say or do things that have a positive or negative effect, but I believe that it is not usually deliberate attempts to change them that have the biggest effect, but random comments that happen to strike them at a receptive moment.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16