{v. phr.} To start afresh; to have a new beginning. * /"Don't be sad, Jane," Sue said. "A divorce is not the end of the world. Just turn over a new leaf and you will soon be happy again."/ Compare: CLEAN SLATE.
TURN OVER A NEW LEAF
Meaning of TURN OVER A NEW LEAF in English
Slang English vocab. Английский сленговый словарь. 2012