From Lisa Raynor, a prayer based on one of the Psalms:

Heavenly Father, help me to put aside my cares or worries and concentrate on you.
Help me to trust you.
Stop me from hating those who have hurt me.
Give me the strength to move on from situations which have caused me pain and upset.
in the stillness of my prayer., guide me to the blessing of your peace,
and to appreciate the love that is around me. Through Jesus Christ our Lord. Amen

This prayer guided me through an upsetting time in my life.