Not all marriages are built to last. But how do you know when to call it quits? After all, every relationship comes with its own set of growing pains and challenges; it’s discerning the insurmountable ones that can sometimes require the eyes of a pro. Lucky for us, Mary Gurganus, managing partner at Triangle Divorce Lawyers and a committed “marriage saver,” is here to help. She walks us through some of the patterns she’s picked up on in relationships that end in divorce—and how to work through the rough patches.