In all fairness, we must embrace the disappointments we face each day. We would never be able to learn from them and become better people without them. Pain is sudden yes but let it be momentarily rather than lasting.
Desire to want to grow rather than reap from disappointments and remember that man, machine and to some extent animals may disappointment you for various reasons or what so ever, but to God this is a phase.
Think of it as a work in progress. Your are by no means a finished article and just like any art work, there is always some editing to be done. Disappointments may come but life goes on. Be persistent towards that goal, dream or aspiration.
Hard work, persistence, zeal and determination will form that recipe for you to cook success!