Do you have kids, Kitsune?
I can answer that with a question: judging by my posts, do you think its a good idea for me to have kids?
Playing up the grandkid factor can be a good motivator for many older men to shape up their lifestyle.
Since this isn't an option at the moment, I think I need to keep pushing the "family button" a bit more. He's beginning to improve and I just need to make sure he continues down that path.