In this BBC podcast episode, the hosts delve into the English idiom "turn over a new leaf," exploring its meaning and how it’s used. They highlight its metaphorical sense of making a fresh start and leaving behind bad habits, likening it to the popular practice of New Year's resolutions. The discussion includes relatable examples, such as personal commitments to enhance fitness and nutrition or to stop nail-biting. The episode wraps up by emphasizing that this idiom is not limited to January 1st; it can apply anytime someone seeks positive change. Additionally, the hosts touch on a related phrase, "turn the page."