Peace is a state of mind. It begins with you. It is possible to have peace of mind in the midst of an enormous challenge or even in horrific conditions.
The peace is generated in your heartcenter and radiates outward to your mind. You must be willing to relinquish the control your mind normally has over you and give the attention to your heartcenter. Peace is really a state of heart.
The peace comes from a spiritual place; it is your connection to the Light through your higher self. It is a spiritual state that can lift you out of the human condition long enough to experience a peaceful feeling. In this present moment be aware of the peaceful feeling in your heartcenter. From here peace expands into your consciousness.
For this present moment, you have peace of mind.