It is because of Christmas that Peace is possible between you and God, you and others, and you and yourself (peace of mind).
Peace is the sense within you that God is in control of your circumstances, even when your circumstances are saying that you aren’t going to make it, you aren’t going to get through this.
Peace happens when your resting in what God said exceeds what you are going through in your circumstances or what others are saying. Peace is not an Absence, it is a Presence. Peace is experienced when the awareness of God’s presence is greater than whatever it is creating turmoil or restlessness.