___ the point of no return, 4 letters
___ the end of my rope, 4 letters
___ the end of my rope! (duffer's cry, perhaps), 4 letters
'And while -- it...', 4 letters
\'Cause ___ the end of my wits... (Eminem line), 4 letters
When ___ a party... (Britney Spears line), 4 letters