Expression: cleanse your heart

Hi

We have an expression in our language whose literal translation in English would be something like this:

Cleanse your heart (of any misgivings, doubts, etc)

We use this expression when someone has been disillusioned/angry/disappointed in us without knowing the truth. We explain the situation to him/her and ask him to 'cleanse his heart'.

So now you know why she couldn't make it your birthday party or reply to your messages. I hope you'll cleanse your heart and be friends with her again.

Could you please offer me a suitable English equivalent?

Thanks,

Tom