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Phrase(s): turn the corner
Fig. to pass a critical point in a process. • The patient turned the corner last night. She should begin to show improvement now. • The project has turned the corner. The rest should be easy.
McGrawhill's American Idioms And Phrasal Verbs
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Pass a milestone or critical point, begin to recover. For example, Experts say the economy has turned the corner and is in the midst of an upturn, or The doctor believes he's turned the corner and is on the mend. This expression alludes to passing around the corner in a race, particularly the last corner. [First half of 1800s]
American Heritage Idioms