For instance my understanding of clinical depression is people often have suicidal ideation. I had that, would imagine throwing myself out a window, down the side of a mountain, etc. But I never would follow through because I noticed how my depression filtered my view of the world, and once the feeling passed things did not seem so bad. It would be horrible to make such a final decision as suicide, since it guaranteed my life would not improve, even though my depression told me it never would. Plus, believing I could go to hell for suicide helped keep me from doing it, and concern for how it would affect those I love. Finally, it seemed like such a selfish decision.
Clinically depressed people are numb for life, they are not wailing in self pity.