You can't 'make' someone saner. At least I can't. You sound like someone telling a sick person to 'be well'. I had a friend in marriage difficulties whose method of coping was to smoke unfiltered Camels and who said between drags: "If I hear one more person tell me to 'hang in there' I'm gonna tear his lungs out!"

The story that works for me and that I do tell people is the true one about the young man who jumped off the Golden Gate Bridge and almost immediately, he says, "I realized that all of my problems were fixable... All but one. That I'd just jumped off the Golden Gate Bridge!"