Aw quine, I'm sorry you are feeling low I saw my neuropsychologist today and one of the things she asked me when I mentioned not wanting to seem a burden/invalid etc, was, did I fear my partner would leave? I said I have no idea, but she said it happens a lot It didn't sound so depressing when she said it, but I guess it might help to know you are not alone in your break up....
I would urge you to ask again for the counselling: it is really helping me even though I didn't feel I needed it. It is really easy for people around us to think we are all better so what's the problem? We know however that it's not as simple as that, I don't think even GPs know really.
As for getting back to work, are you signing on? I was contacted by the Pathways to Work team at my Job Centre and the lady I spoke to was very helpful - she mentioned the Shaw Trust are working with them and they help disabled people get into work. You might not be "disabled" as per the perceived idea of a disability but you aren't fully over it are you? Anyway, ask them if they can help.
Take care !