Depression & anxiety, like being on a seesaw.... when the depression was at it's worse everything was deadened, as it started to lift the anxiety hit.

For me it was brought on by trying to cope with too much for too long.  

It's been a long long road, but I've got it pretty much at bay at the moment, even so certain things can still stir up those feelings again, scares the hell out of me.

I think it's like once you crack a piece of china, doesn't matter how carefully it's repaired, the damage is still there.