翻然悔悟 [- - huǐ wù]quickly wake up to one's error; be aware of and correct one's errors [misdeeds]; determined to make a clean break with one's past; make a determined effort to atone for past misdeeds; make amends for past misdeeds; see the error of one's ways and repent：
•¶ 我希望这封信中举述的事实能使你翻然悔悟， 弃旧图新。 I hope that these facts I have stated in this letter may determine you to make a clean break with your past and start afresh.