Meaning: resort to an irreversible decision or sever your attachments. Definitions.
Rewrite 1: nail your doors shut
Rewrite 2: flatten the tires to your ride home
Rewrite 3: leave yourself without options
Rewrite 4: destroy your maps back

Comment: This cliché also has a component of severing relationships.

More reading about clichés
What I found when I googled “clichés”:
• Literary Voice: Don’t Panic Cliches, but Do Read, Read, Read: “So trying to become aware of the cliches in the language and the ones you use yourself.”