Here's a great thought that I just read in the Azusa Street book. A woman was praying for a young girl with deformed legs which required her to have braces on them, she had been prayed for before with "no success" and had little expectation of being healed. The lady said to her "It will break Jesus' heart if you are not healed"; that changed the atmosphere a bit, they prayed again and unsurprisingly the little girl was completely healed.
Jesus' heart of love and compassion towards people and the fact that he has paid the price for our forgiveness and healing should give us great confidence/faith.
I want to understand the heart of Jesus better by drawing closer to Him. I am off to spend time with Him right now.