From the Zohar

From The Zohar English Volume 5, pg. 229
“When we know that a specific action is positive and in our best interests, another voice inside inevitably talks us out of it. When we know that a particular behavior or action is negative, something impels us to engage in it anyway, even though we don’t really want to. These are Good and Evil Inclinations at work. We must recognize these two urges as distinct voices battling for control over our behavior. The moment we recognize the Evil Inclination as our true enemy, we can begin to remove its influence over us.”