We want to do great things, and then we fail at little things. We want to be bold and then we are timid. We want to please God. We want to do our fast well. As has been previously discussed, however, fasting is not about us impressing God. We fast either because 1) we are in need of God; or 2) we have actually grown dull to our need of God, and wish to come to our senses once more.
