There are certain things that praying alone cannot bring them to us. One of the things moves God is the heart. The scriptures taking about the woman with the issue of blood said told us that she said in her heart that is she could touch the hem of Jesus' garment she would be healed.
The woman received her healing not just by believing and confessing it, she received her healing when she got closer to Jesus, despite her condition and the large crowd surrounded Jesus and touched His garment.
This is a true expression of faith. The scriptures also told us that without faith it is impossible to please God because those that come to Him must first believe that He is and a rewarder of them that diligently seek after Him. When we believe our action shows it.
Sometimes it is not God, sometimes it is us. We cannot expect to see some results is we fail to do what is expected of us.