In this short but powerful practice we apply the for opponent powers to purify our negative Karma. First, we take refuge, we rely on our trustworthy teacher, the Buddha, and the path he showed us. Then we regret all our negative actions, which only create obstacles on our path. And next we apply the remedy, in this practice it is the recitation of the Vajrasattva Mantra. To conclude, we apply the power of restraint; we make a pledge to do our best not to do these negative actions again.