Every Christian can do this: Nine months ago, I Lloyd Chin had no power from God, no knowledge and no fruits. Then I pursued God hard. I asked for forgiveness. After he gave me his forgiveness, I surrendered my life to him. Then he put his fear into me. After that, I learned how to fast and before long, whenever I prayed God heard me. And sent his Holy Spirit and his angels to destroy the works of darkness all around me:
James 5:16 King James Version (KJV)
16 Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.
If you cannot cast out demons or heal the sick, you simply haven’t cut out all your sins and denied your flesh enough. Humble yourself like Brother Lawrence and fully surrender to God. Let go of all your ideas and expectations of God. Ask for his will to be done.