The Road of Trials in Goodfellas (1990) is the deeper change and loss of the older self.
Following the marriage, Karen turns from a nice girl to a mob wife. She moves from her parents house to her own home. She learns about Henry's criminality and accepts it to the point where she's absolutely comfortable with the FBI coming into her home.
The 2000+ stage Hero's Journey and Transformation through a New World/State is the template upon which the vast majority of successful stories and Hollywood blockbusters are based upon. Learn about this at http://www.clickok.co.uk/index4.html