If God can have all of you to Himself then God can use you to be spent for His kingdom. God bought us with His own blood and He stamped His image on us so we can show others who He is. He is calling us to yield all of our talents and gifts for His glory. The great struggle is with the heart that is not willing to surrender to His purposes and plans. If you are in a struggle God will wait until you come to the end of yourself and then be there to pick you up and empower you to do His will.