Have you ever tried this simple, powerful method?
Choose a short Bible verse and repeat the whole thing 30 times. Each time, emphasize a different word, shouting the first word, then the second, and so on. By the time you're done, don't be surprised if you feel a profound sense of peace.
Why? Because your own ears heard the Word of God, and the Word says that as you hear it, the gift of faith comes in.