Is it possible to consider any negative thing and, depending on your point-of-view, see it differently? Take a bad thing, take a "worst" thing, look at it from one side and then another, and tell me that it doesn't change.
Depression seems to follow that line for me.
Does life ever seem an utter waste? Sling whatever logic you wish, the feeling is low, there in your chest, an ever sinking pressure that nothing you ever do will make a difference, nothing you've ever done has mattered, and that life will end today or fifty years from now and the only thing that might change is the length of your obituary.
That is depression from one angle. Look to your wonderful family, a job that provides a living, a talent that might one day provide a better living, even faith in a benevolent God. Make a list as long as you wish, it doesn't matter, emotion and logic live in different area codes.