There are several things that have already been determined by God today: He has already determined when the sun will rise and set as well as whether or not it will rain. He will be with you each moment of the day and will love you no matter what. He has determined His best plan for you, will help you recognize it, and walk in it throughout the day.
So, the question then becomes: What will you determine about this day?
Will you purpose to find joy in the moments of today?
Will you trust that God has each situation and circumstance under control?
Will you yield to His authority by following His will?
Will you stand on His promises, depending on Him to see you through?
Will you make the most of opportunities to talk about Jesus?
Will you demonstrate His love to those around you?
In Psalm 118:24 the author wrote: This is the day the Lord has made; I will rejoice and be glad in it.
What will you do with today?