When the despair comes because of the failure, then as soon as You have to bounce. Don't let the taste such there are up to protracted, even to the hinder You to go forward.
Many ways can be done to keep the spirit and restore Your confidence in achieving anything You dreamed of. One easy way You can do is learn from the experience of others who also never felt a sense of failure, and rise up up to now them become successful.
( Work and Work )