turn the corner

Turning point in a series of events. When the corner is turned, there is hope for improvement.

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]