The Lord also allows evil spirits from hell to influence us in the opposite direction. The result is a constant battle between the Lord and His angels, and devils in hell for control over us. The devil, or hell attacks the person and calls forth the evil in him, while the Lord protects him and calls forth the good in him. Again, the Lord maintains a balance between these two forces, so that we are free to choose as we will. What we do experience is the result of the conflict, which is a temptation.
Temptation has everything to do with our book of life, or our memory of past experiences.
Evil spirits from hell bring on a temptation. They tempt us to lie, to be cruel, to think of ourselves alone. They do so by bringing up from our memory all the times where this has been issue, and remind us of the times we got away with it. They will remind us of justifications we've used in the past, and of how good it feels to prove ourselves right. But all this time, the Lord and His angels are working on us in the other direction.