turn over a new leaf

Idioms & Phrases

turn over a new leaf

Make a fresh start, change one's conduct or attitude for the better, as in He promised the teacher he would turn over a new leaf and behave himself in class. This expression alludes to turning the page of a book to a new page. [Early 1500s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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