take a long (hard) look in the mirror

To closely examine, investigate, or reflect upon one's life, motivations, past actions, etc., especially in order to identify some failing or culpability on one's part. If you think that kind of behavior is OK, then you need to take a long, hard look in the mirror. Unfortunately, most companies won't take a long look in the mirror until something goes disastrously wrong. I spent 30 years of my life in an unfulfilling dead-end job before I finally took a long, hard look in the mirror and realized that there had to be more to life.