What happens when the spouse who was more serious, focused or successful becomes the one who struggles following divorce? 

re • birth n.  "Another birth; renewed existence or revival; a person's choice to live a new life following a spiritual enlightenment; change in one's beliefs; resurgence."  

Divorce has a really bad habit of bringing up the past, encouraging it's participants to lose sight of their well-being and keeping them in a purgatory without peace, sex or dating until the divorce is complete.  Sheesh!