I think this is the closest to what depression feels like that I have been able to describe with pictures. Except for the crushing weight. That's very easy to forget about.
Yeah, you could make a similar picture, but lieing down on that platform, trying really really hard to push up (as if trying to get up in a 10g gravity well) while at the same time the sky and the ground crumble.
But I wouldn't know how to set the perspective to get that right and still get this feeling of loneliness.
Speaking of which... I think the easiest way to get over these things is to tackle the loneliness part. Find someone to talk to, and if possible to give them a hug. Mind and body are one, the physical feeling of being supported can do wonders to ones mental state, even if its technically little more than a warm loving gesture :)
Yeah, you could make a similar picture, but lieing down on that platform, trying really really hard