Run its course.
Run its course.
The phrase 'run its course' is used to describe a process that has ended naturally after all its phases or stages have been completed. This can apply to events, illnesses, trends, or emotions, signifying that the progression has reached a conclusion without external intervention. For example, a common cold is typically allowed to 'run its course', meaning the person suffering does not seek significant medical intervention and allows the illness to resolve on its own over time.
The old trend seemed to finally run its course.
The old trend finally came to an end.
My interest in the hobby began to run its course.
My interest in the hobby started to decline.
The project has run its course and now needs reevaluation.
The project has reached its natural conclusion and now needs a reevaluation.