Faith is the substance.
Some people miss out on God's blessings for they go by what their emotions tell them. It is alright if you feel like that, but even if you don't feel like that, God still hears your prayers. I see people trapped by their emotions. They think that because they feel good everything is alright and because of that they never start to please God, for the only way to please God is by faith. They also never experience the full measure of God's blessings, for the only way to be fully blessed in every area of your life is by faith and faith alone.