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.

我希望这封信中举述的事实能使你翻然悔悟，弃旧图新。

《新英汉大辞典》

He needs to make a clean break with his old life and start afresh.

他需要与旧生活彻底决裂，重新开始新的生活。

youdao

I want to make a clean sweep of everything I've learnt and start afresh.

我要和以前学的那些玩艺儿一刀两断，一切从头开始。

youdao

His highest risk option is to rip up some of the more dubious Chinese contracts (a move that Capriles is threatening to make) and start afresh.

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