He is the one that takes over in crucial situations,
situations that cause us to make big decisions,
that one telling us there will be no harm in the choices we make, he tells you that there is no fear and the outcome will be of a better feeling, as he pushes the other thoughts out of sight, he realizes he has you and pulls you in deeper and deeper waiting for you to accept him and say the devil lives.
You loose the thought of overcoming him and replace it with the devils life itself.
As you think everything is ok you are committing the devils acts, sooner or later you will live no more suffocated bye the devils oxygen, and you slowly fade into the darkness of his dreams you will have one last look and he will let you realize what's happened but bye then it will be to late because he has you and he smiles knowing his living is the cause of your death.