A Good Prayer to Start the Day

May everything we do
begin with your inspiration
and continue with your saving help.
Let our work always find its origin in you
and through you reach completion.
We ask this through our Lord Jesus Christ, your Son,
who lives and reigns with you and the Holy Spirit,
one God, for ever and ever. Amen

This prayer is the closing prayer of Morning Prayer, Week I, in the Liturgy of the Hours. I think it is a most appropriate way to start any morning, and I often pray it at school in the A.M. classes. Does anybody know the origins of this prayer?