Ever have one of those days?

I sware Bianca is the worst of everything sometimes. Worst sleeper, worst eater, ect. Today we worked on nap training. I put her in her room for an hour and she cried to get out the whole time. After an hour I let her out. We then worked on some potty training and she was wearing her tinker bell underwear, she got up on the coffee table and proceeded to pee all over it. Now she is cranky, wet, and wants candy. The only things she eats are: milk, strawberries (which we now have to cut back on bc they are causing a bad rash on her), spaghettios, nuggets, bacon, pepperoni, fries, and lime yogurt, occasionally I can get her to eat a piece of toast with butter. Other foods she won't try or if she does she ends up throwing them up when they get to the back of her throat.
I heard about that book deceptively delicious on Oprah yesterday and her secret is that she purees veggies and adds them to foods she cooks for her kids. I am planning on trying that, except the only thing I will be able to use it on are brownies with Bianca, maybe nuggets, we'll have to see. I just feel like she is undernourished and overtired all the time. I am trying so hard to get her better at both of these but today I am just complaining I guess because I feel fed up. I haven't gotten anything done today, except Bianca and I killed a cricket in her room. Ever have one of these days? Please tell me I'm not the only one.