FDR left a handwritten speech in a drawer when he died (to deliver at the UN). He wrote, "If civilization is to survive, we must cultivate the science of human relationships—the ability of all peoples, of all kinds, to live together and work together, in the same world, at peace... The only limit to our realization of tomorrow will be our doubts of today. Let us move forward with strong and active faith."
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.