Hebrews 12:2

fixing our eyes on Jesus, the pioneer and perfecter of faith. For the joy set before him he endured the cross, scorning its shame, and sat down at the right hand of the throne of God. (Hebrews 12:2 NIV)

It's always best to fix our eyes on Jesus. When we fix our eyes on our problems they become bigger, than our God.  We have the choice of what we will focus on.  Max Lucado says in his book, Facing your Giants that like David we MUST focus on our God and not on our giants.  Had David focused on the giant he would have been overwhelmed but because he fixed his eyes on his god and his power he was able to defeat the enemy.