I may have mentioned this before, but people who don't suffer from depression don't --- can't really understand it.
Right now I'm in a relatively sweet situation, all things considered. Yet, I still get moments where I feel that, that nothing matters and it would be better to just sleep 'til death.
I'm on medication, so it's just moments and not days, and I'm moderately quick to take a hammer to such thoughts - knowing I have depression helps in recognizing these thought patterns which are outside my agenda.
It's a little bit like if, say, your arm was broken.
And you were ashamed of the fact you had a broken arm.
And people told you to just get over it, to get a grip.
And you wanted to get better and do well,
And the pain wasn't so bad anyway,
But you still couldn't get a grip and things kept slipping from your fingers.
It's kind of like that.