I have to agree that it does sound like you are in a place right now where you just aren't going to listen to any of the wonderful advice you've been given.
Please stop being so harsh about yourself. I'm willing to bet you are actually lovely. You say you have to be photographed each day. Do you have to see the photograph? I think a lot of people would struggle with this to be fair!
I would say minimal make-up can make a huge difference. If you are just wearing foundation and mascara it will make your face look very "flat"and dead. A tiny amount of blusher (it doesn't need to be scary stripes) will make a massive difference to your face. It will make you look brighter and more alive.
A light foundation , mascara, blusher and lip balm (the clarins one linked above is lovely) should make you look refreshed and awake. You don't need to go all out with make-up if you aren't comfortable with it.
As for clothes, do you wear different colours, or do you try and hide yourself away wearing dark colours all the time? Even something like a bright coloured scarf, necklace or earrings can make a huge difference to how you look and also feel.
As you are losing weight I would concentrate on getting together some lovely cheerful accessories.
For hair, could you try and just master a couple of nice updos? I find that when I wear my hair up nicely it often makes me feel more groomed and slimmer as well.
I feel like you've been given a hard time over not wearing a bra, but I promise you it's for good reason. If you find them uncomfortable then you haven't been wearing the correct size. I would suggest though just wearing something like the asda sports/sleep bras instead as these are really comfy and give at least a little support. It's not really about how big or small your boobs are, but how it will alter your shape. I promise you even a comfy sleep bra will actually make you look slimmer and boost your confidence. These are the type I'm talking about. They feel nothing like wearing a bra I promise!. direct.asda.com/george/womens/lingerie/comfort-bra/G003991106,default,pd.html They are so cheap, please just try one? 