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                           general:: 
                            Phrase(s): You got to do what you got to do. [and] A man’s gotta do what a man’s gotta do. 
One has to do whatever it is that one feels obliged to do.  •  I know I wouldn’t ever agree to that kind of thing, but you got to do what you got to do.
                        
                        
 
                        
                            McGrawhill's American Idioms And Phrasal Verbs