My daughter lost the sight in her left eye 5 weeks ago, the joy came as the optic nerve healed and her eyesight returned. MS can be so cruel. On a lighter note, the joy of finding, and following, instructions on line for how to adjust a cupboard door hinge so that it no longer fouled on the door below. On a wholly bumble brag moment, my wife's joy at being able to swimming our pool - it only took 8 weeks to replace broken parts and clean up consequent filth, to enjoy clear, clean water.
I must remember these when I wake up my usual curmudgeonly self.