How we start the day will often dictate the course of the rest of the day. This is why the Church highly encourages the faithful to begin their day with a morning prayer.
Here is a prayer the Church provides in the Roman Breviary that asks God to bless the day and make it holy.
O Lord God, King of heaven and earth, may it please Thee this day to order and to hallow, to rule and to govern our hearts and our bodies, our thoughts, our words and our works, according to Thy law and in the doing of Thy commandments, that we, being helped by Thee, may here and hereafter worthily be saved and delivered by Thee, O Saviour of the world, who livest and reignest forever and ever.
Amen.