I try to have them pre-planned but sometimes things get dorked up at work and I can't get to my food. Like today, the .5 cup allbran was supposed to go with chicken but I didn't get to eat the chicken or the jello. That throws my meal plan off for the day and I have to adjust it when I get home. I had to do that for tonites dinner to.
Last nite I didn't feel like cooking the Talapia that I had planned for dinner and sadly I didn't feel like cooking it tonite either. I really really dislike the smell of cooking fish in the house. Another reason I eat canned tuna.
I hate tweaking my diet. Just when you find what works, your body changes and it doesn't work any more. Vicious but necessary cycle.