Often we feel we need more faith. But Jesus said  to his disciples a grain of mustard seed is the size of faith that is needed. This is because it is not faith that is the primary issue but what we have faith in. Tiny faith  in a mighty God is as affective as great faith in a Mighty God. What may be different is the journey  ie.   a fearful journey or a journey of confidence. The mighty God remains the same.

Faith has to have an object or person to be effective. Large faith in thin ice will not be effective. Small faith in thick ice is better

Thanks to Charles Price (Keswick)