Every defeat, every heartbreak, every loss, contains its own seed, its own lesson on how to improve your performance the next time.
Count your blessings. Once you realize how valuable you are and how much you have going for you, the smiles will return, the sun will break out, the music will play, and you will finally be able to move forward the life that God intended for you with grace, strength, courage, and confidence.
Laugh at yourself and at life. Not in the spirit of derision or whining self-pity, but as a remedy, a miracle drug, that will ease your pain, cure your depression, and help you to put in perspective that seemingly terrible defeat... Never take yourself too seriously.
Sound character provides the power with which a person may ride the emergencies of life instead of being overwhelmed by them. Failure is... the highway to success.
Extend to each person, no matter how trivial the contact, all the care and kindness and understanding and love that you can muster, and do it with no thought of any reward. Your life will never be the same again.