To self-obsess over everything you have said or done in your past that could have contributed to an outcome not in your favor and to carry the belief that things would be different had something of little importance been altered.
"You need to stop microanalzying your relationship. He left you 'cause he doesn't love you and knew he never would. There's nothing you could say or do to prevent that."
"Don't microanalyze the past. Trust in yourself and know that people take you in whole for who you are."