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Phrase(s): It is never too late to mend.
Prov. It is never too late to apologize for something you have done or try to repair something you have done wrong. • Sue: I still miss Tony, but it’s been a year since our big fight and we haven’t spoken to each other since. Mother: Well, it’s never too late to mend; why don’t you call him up and apologize?
McGrawhill's American Idioms And Phrasal Verbs