Ah Sleep, the one form of help I haven't yet tried! Haven't heard of a Eating Psychology Coach before, you seem very perceptive. It is nice of you to give your helpful input.
I took the lead from your post about the consequence of not speaking out (never thought about it like that, avoiding a scene/worrying about a reaction to speaking out has always been my focus) and have addressed something that upset me a lot a few weeks back. Haven't heard back from the friend, but had already decided that it might be the end for us, but at least I let it out. I feel better about it. So many thanks. 
Prior to reading this thread I had strung 3 incidents together where I felt upset about something and was developing a dialogue in my head that it was because of my behaviour/attitude that these 3 friends (independant incidents) acted not in the best way. It was only reading this thread that made me think "Hang on, perhaps actually it is them, why are you trying to find a way to make their behaviour your fault!".
Think I am going to leave the incident from Monday as I should have addressed at the time but have vowed though to challenge that sort of behaviour next time - not that I really want to see him again but that sort of behaviour in general.
Sleeping & fighting - sorry to hear of the distress over saying goodbye to the nurseries. I think they hold such lovely memories or both the DC and you, it is only natural. I felt wobbly last weekend as DS (6) told me he is too old for his Fireman Sam toys and that we can sell them. He was FS mad, so it seems a big step forward. 
Perfectly well done for getting through the interview. When will you know the outcome? Is there any way of looking at it that will reduce your stress? I guess you could see it as out of your hands for now? However, I know that feeling of something hanging over you, fingers crossed you find out quickly.
Good luck with giving up the Diet Coke. I have cut down a lot (we never have it at home etc) but still have it occasionally. I am sure it is rubbish for us. How much do you drink now? Would rewarding yourself with something for xx days Diet Coke free work? A 'paint & shape' of your nails or a new xx?