When do you come to the point of complete and utter surrender to God?

I do want to surrender all to God. I know and have complete confidence that God is holding me in His hands. Therefore, he is control of everything. He has my plans intermingled with His plan. His plan for me is for my best interest and for the betterment of my life. Then why am i so afraid of giving up certain things that are causing me to stumble? If i really and truly trust God then giving up the nonsense of the world should be easy. =/