I totally know what you mean. Your weight loss is fab though. I have just finished my fourth week and my emotions have been up and down.
To cheer myself up I just think that this diet is tough and yet I have stuck to it. I try clothes on and can feel them getting loose.
I had one day of feeling like skipping about, and did some much needed housework and now I'm easily tired and find basic things really hard work, like vacumming or mowing the grass. Still, can't have everything I suppose.