Nutrition makes me think of Tolstoy's famous quote in reverse: every bad diet is the same, while every good diet is unique.

By that I mean that I have to be very careful with fruit and nuts - having them around the house means that I can mindlessly eat at least an entire extra meal worth calories a day, a handful at a time.

For me beans, lentils, and "veggies" more broadly are very helpful with appetite control though, I agree.. and are pretty easy to make unless you're on the go all the time.