That is what I'm going to do Mr Citrus :D Monday will be a work day whether I like it or not, if I don't end up turning up on Monday then I'm absolutely fucked and I don't know when I'll ever make it back. I'll make sure I'm up early on monday and have all my clothes laid out the night before and everything that I need on the side to make it easy to just jump out of bed, get dressed and leave the flat without having to think too much.
I totally agree the the scenarios I'm building up in my head are definitely worse than the reality, but that's the nature of anxiety disorders, I need to convince myself that I can do it, and to be honest, once I'm there the anxiety practically goes, it's just getting there that is the problem.