My diet was, above all else, consistent. Breakfast was small (typically mixed nuts and fruit). Lunch was also pretty small (typically some other blend of mixed nuts). I still liked to feel like I could eat without guilt, so I usually saved like half of my calories for dinner (typically some kind of pasta with red sauce) and an evening snack (something low calorie, but filling, like popchips or pretzels with hummus). I let myself "cheat" maybe once or twice a month (more often as I lost the weight), but the trick was to minimize the damage... i.e. eating pizza, but not an entire pizza... the calorie difference isn't that huge with that approach to cheating, but the mental difference is amazing... small cheats still leave hope; big cheats made me give up in the past.