In the Gathas, Zarathushtra describes evil as a primordial force. He does not specify its origins. But he says that in our existence, we bring it to life, we give it substance, we make it real, when we choose it with our thoughts, words and actions. Therefore, a key to the destruction of evil and the suffering it causes, is making the right choices, which brings us back to the Ahuna Vairya prayer -- the prayer of choices