Sigh. Sound familiar. But yeah, you should fight the "idiot" bit, this has nothing to do with being an idiot and (I think?) everything to do with more stress and more deadlines kill your motivation to deal with them, hence making things worse.

(Sorry if this is not the case, I guess this is exactly where I am at the moment so I assume the rest of the world shares the same problem...)

No, actually this is EXACTLY it. That and the fact that when I am feeling extremely stressed and nervous about something, I go into avoidance mode. Sorry that you're sharing that same mental space right now, but at least you know that you are definitely not alone!