Repentence.
“The repentant sinner should strive to do good with the same faculties with which he sinned…. With whatever part of the body he sinned, he should now engage in good deeds. If his feet had run to sin, let them now run to the performance of the good. If his mouth had spoken falsehood, let it now be opened in wisdom. Violent hands should now open in charity…. The troublemaker should now become a peacemaker” (Rabbi Jonah Gerondi, thirteenth century).