turn over a new leaf

To turn over a new leaf means to begin again from scratch, start fresh, or to reform your life and start it over again. Figuratively, this might mean turning to a fresh page whether it is a page of your life or used in another situation. Most often, someone is turning over a new leaf after they have made a variety of mistakes in the past and want to start fresh again. The new leaf is symbolic for starting with something fresh, such as a fresh piece of paper.