Christian, do not fear failures. Only fear quitting along the way.
C.S. Lewis explains:
No amount of falls will really undo us if we keep picking ourselves up each time. We shall of course be very muddy and tattered children by the time we reach home. But the bathrooms are all ready, the towels put out, and the clean clothes in the cupboard. The only fatal thing is to lose one’s temper and give up. It is when we notice the dirt that God is most present in us; it is the very sign of his presence. (Taken from The Letters of Lewis, p. 199)
Get muddy and tattered, and get on.