Things are no different today.

 O Lord my God, in you do I take refuge; save me from all my pursuers and deliver me, lest like a lion they tear my soul apart, rending it in pieces, with none to deliver. O Lord my God, if I have done this, if there is wrong in my hands, if I have repaid my friend with evil or plundered my enemy without cause, let the enemy pursue my soul and overtake it, and let him trample my life to the ground and lay my glory in the dust. Selah

Psalm 7:1-5 (ESV)
 
David had enemies who wanted to destroy him. He did nothing to deserve their hatred. Just as he did nothing to cause the hatred, he could do nothing to ensure his enemies would not destroy him.
 
He was very aware that he had to trust in God. He was put in a position at a young age to learn this valuable, life-transforming principle, and he learned it well.
 
Things are no different today. We, too, must learn to trust in God or face utter failure and defeat.