Do not despair. Stay calm, get your rosary beads and pray the rosary. Even if you can only make it through one decade, or one Hail Mary, or all you can do is just hold the beads – do that. God and our Blessed Mother will bring you their love, peace, and steady your heart.
Love Being Catholic 
There is a calming effect to reciting rosary.
The Holy Rosary is a very efficacious prayer and it makes one who prays the Rosary holy. It gives strength and wisdom and protection from harm. The Holy Rosary is very powerful prayer, and the protagonist is the Blessed Virgn Mary but it gives greater glory to Jesus her son because the mysteries is about the life and death and resurrection of Lord Jesus Christ and the Glory of God, and the virtues of the full of grace is also shown and her role in the salvation of the world by Her son, the God the Son, the Second Person of the Holy Trinity, our Lord God and Savior Jesus Christ. Amen.
+AMDG+
The Holy Rosary is a strong support and storming heaven with praise and thanksgiving and of our petitions and the realities of the the Memorare;
Remember, O Most Gracious Virgin Mary, that never was it known that anyone who fled to thy protection, implored thy help, or sought thy intercession was left unaided.
Inspired by this confidence, I fly unto thee, O Virgin of virgins, my mother; to thee do I come, before thee I stand, sinful and sorrowful. O Mother of the Word Incarnate, despise not my petitions, but in thy mercy hear and answer me. Amen.
God through the meditation and praying the Holy Rosary grants our petitions and sanctify us.
+AMDG+