I plan out the night before exactly what I'm going to eat the next day, for all five meals. That way, I know my nutrition intake already, and I can tweak things as needed if I have too many carbs or not enough protein.
Once I plan it, I prepare as much of it as I can and pack it all in the same area of the fridge. Easy to grab and go. By doing this, I'm forced to eat what I brought to work for meals instead of going out. Saves money too!
For quick snacks and a chocolate fix, I grab a Fiber One Brownie Bar with a piece of String Cheese. Plain Greek Yogurt with a touch of honey, strawberries and splenda is also a great balance! Always try to balance out protein and carbs as much as possible :)