In order of your sadness you have placed your job first. I assume therefore this is the prima facie cause of the miserable life you lead.
As with so many problems there are only two things you can do.
1) Deal with it
2) Or don't.
If you don't deal with it you will realise that many jobs are tedious, dull, underpaid, boring, promotionless, pointless, unfulfilling wastes of time. Time will pass until you leave and get something mildly more exciting.
If you deal with it, then your life will change. Find new employment NOW, there are so many opportunities out there it is unbelieveable. But it is down to YOU to change it. Job offers are not going to land on your doorstep or email account out of the blue. You have to sell yourself, and being a miserable moo-moo is not doing you any favours. Travel the world, work abroad, join the forces, go to University, get on a training scheme, join a decent firm. The list is endless, but you have to do the ground work.
As for being 9 and a half stone, I totally agree something has to be done about this appalling weight to be accepted in the real world. For Christs sake girl, try and be at least 10 and a half for Christmas. I, and many others, can not abide all these skinny sorts. Go and eat some Ben and Jerry's now!!!!!